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There are 500 students in a school. On the first day of school, 15% of the students were absent due to illness. How many students were absent on the first day of school? Answer: 15% of 500 students is 0.15 * 500 = <<0.15*500=75>>75 students #### 75 Question: A library has 120 books. 30% of the books are fiction, and ...
A scientist walks along a beach. At first, the sand under his shoes is warm, but then it gets cooler. After a while, it is cool under his shoes once more. Finally, the scientist's shoes get warm again. Which graph represents the change in temperature of the sand under the scientist's shoes over time? Answer: The temp...
If 10 workers can build 3 houses in 60 days, how many workers are needed to build 5 houses in 40 days? Answer: First find the number of worker-days it takes to build 1 house: 10 workers * 60 days / 3 houses = <<10*60/3=200>>200 worker-days/house Then find the number of worker-days it takes to build 5 houses: 200 work...
Robert is 10 years older than his brother Stan. If his brother's age is represented by the variable a, what is the sum of their ages? Answer: If Stan's age is represented by the variable a, then Robert's age is a+10 The sum of their ages is a+a+10 = 2a+10 #### 2a+10 Question: A group of friends get together to play 4...
A grocery store had a total of 432 bottles of regular soda, 288 bottles of diet soda, and 120 bottles of water in stock at the end of the day. How many bottles did they have in total? Answer: There were 432 + 288 + 120 = <<432+288+120=840>>840 bottles in stock. #### 840 Question: A rectangular garden is 12 feet wide ...
A local grocery store receives 6 delivery trucks each day. Each truck has 50 crates of cereal. If each crate has 16 boxes of cereal, how many boxes of cereal does the grocery store receive each day? Answer: There are 6 trucks each day, and each truck has 50 crates of cereal, so there are 6 * 50 = <<6*50=300>>300 crat...
It takes 40 minutes to fill a water tank. How many hours does it take to fill 3,000 tanks? Answer: It takes 40 minutes to fill one tank. It takes 40 * 3000 = <<40*3000=120000>>120000 minutes to fill 3000 tanks. There are 60 minutes in an hour. Therefore, it takes 120000 / 60 = <<120000/60=2000>>2000 hours to fill 300...
There are 500 kids in a school. If 40% of them move to a new house, how many kids stay? Answer: If 40% of the kids move to a new house, then 60% of them stay. 60% of 500 kids is 500 * 0.6 = <<500*0.6=300>>300 kids #### 300 Question: A farmer plants corn and wheat on a 40-acre farm. If he plants 10 more acres of corn ...
If 30 liters of milk lasts 5 people 3 days, how much milk is needed for 10 people for 6 days? Answer: 30 liters of milk lasts 5 people 3 days. This means that 1 person needs 30/5 = 6 liters of milk for 3 days. To find the amount of milk needed for 1 person for 1 day, we divide by 3: 6/3 = 2 liters. Now, we need to fi...
Mr. Sean Hunte teaches an online class with 15 students and runs an in-person class with 10 students. He wants to combine these classes into a hybrid format where each student receives the same number of live sessions per week. If he plans to schedule 60 live sessions in total per week, how many sessions will each stu...
1.5 * 10 = 15 #### 15 Question: 15 * 10 = 150 #### 150 Question: 150 * 10 = 1500 #### 1500 Question: 1500 * 10 = 15000 #### 15000 Question: 15000 * 10 = 150000 #### 150000 Question: 150000 * 10 = 1500000 #### 1500000 Question: 1500000 * 10 = 15000000 #### 15000000 Question: 15000000 * 10 = 150000000 #### 150000000 Que...
The price of a rose typically ranges from $15 to $20, while a lily ranges from $12 to $25. How much would it cost to buy 3 roses and 2 lilies at their respective lowest and highest prices? Answer: At the lowest prices, 3 roses and 2 lilies would cost 3 * $15 + 2 * $12 = $45 + $24 = $<<45+24=69>>69 At the highest pric...
The cost of one large muffin is $2.50. The cost of a large cake is 4 times the cost of a large muffin. How much do 4 large muffins and 3 large cakes cost? Answer: The cost of one large cake is 4 * $2.50 = $10 The cost of 3 large cakes is 3 * $10 = $30 The cost of 4 large muffins is 4 * $2.50 = $10 The total cost of 4...
A grocery store sells oranges for $0.50 each and apples for $0.75 each. If you buy 10 oranges and 5 apples, how much will it cost? Answer: The cost of 10 oranges is 10 * $0.50 = $5.00 The cost of 5 apples is 5 * $0.75 = $3.75 The total cost is $5.00 + $3.75 = $<<5+3.75=8.75>>8.75 #### 8.75 Question: A group of friend...
For the fourth of July, the local restaurants eat up a lot of pancakes, bacon, and other foods. If the first restaurant had 100 customers and the second restaurant had 150 customers, and the food they ordered had an average of 3 pancakes per customer, how many pancakes did the restaurants serve in total? Answer: The ...
There are 500 pages in a book. Abigail read 30% of the book on Tuesday and 6 pages on Thursday. How many pages does she need to read on Saturday to complete the book? Answer: Abigail read 30% of the book on Tuesday, so she read 0.3 * 500 = <<0.3*500=150>>150 pages. On Thursday, she read 6 pages. So, she has read a to...
James has a part-time job at a library where he earns $10.50 per hour. If he worked 24 hours this week, how much did he earn? Answer: James earns $10.50 per hour. If he worked 24 hours this week, he earned 24 * $10.50 = $<<24*10.50=252>>252. #### 252
There are 37 rows of chairs in the auditorium, with each row containing 22 chairs. If 17 chairs in the first row are broken, how many chairs are working? Answer: If there are 37 rows of chairs, and each row has 22 chairs, then there are 37 * 22 = <<37*22=814>>814 chairs in total. If 17 chairs in the first row are bro...
The price of one box of candy is $10. If 5 kids are each given 2 candies, how much does each of them need to pay? Answer: 5 kids x 2 candies each = 10 candies 10 candies / 1 box of 10 candies = 1 box 1 box x $10 = $10 $10 / 5 kids = $<<10/5=2>>2 each #### 2
There are 500 students in a school. On the first day, 5% of the students ate the school lunch. On the second day, 15% of the remaining students ate the school lunch. On the third day, 10% of the remaining students ate the school lunch. How many students have not eaten the school lunch after three days? Answer: On the...
The new library is huge. Each section has at least 15 tables in it, and there are 7 sections. What's the least number of tables that could be in the library? Answer: 15 * 7 = 105 #### 105 Question: Alexis bought a CD player. She does not remember the price, but she does know that 6% sales tax came to $4.80. What was ...
60 people are attending a cookout. 75% are boys and the rest are girls. Of the girls, 40% like chicken, 55% like beef, and 30% like both. How many girls don't like chicken or beef? Answer: Since 75% of 60 are boys, 25% of 60 are girls. Thus, there are 60 x 0.25 = 15 girls. Of these, 40% like chicken, 55% like beef, a...
There are 20 kids in a class, 9 of whom are girls. What is the ratio of girls to boys in the class? Answer: Since there are 9 girls, there are 20-9 = <<20-9=11>>11 boys. Thus, the ratio of girls to boys is 9:11. #### 9:11 Question: A baseball team played 25 games and won 17. What is the percentage of games they lost?...
The price of a pack of 6 t-shirts is $25 and the price of a pack of 3 t-shirts is $19. How much more money will you spend if you buy 12 of the $25 packs than if you buy 12 of the $19 packs? Answer: The cost of 12 packs of 6 t-shirts is 12 * $25 = $300 The cost of 12 packs of 3 t-shirts is 12 * $19 = $228 Thus, you wi...
The average (mean) of the numbers 29, 31, 26, 34, 30, and x is 31. What is the value of x? Answer: The sum of the numbers is 29 + 31 + 26 + 34 + 30 + x = 150 + x The mean of the numbers is (150 + x) / 6 = 31 Multiplying both sides by 6 gives 150 + x = 186 Subtracting 150 from both sides gives x = 36 #### 36 Question:...
John has a mural that is 6 feet by 10 feet, and John wants to buy the paint to cover the mural. Each gallon of paint covers 200 square feet. How many gallons of paint does John need to buy? Answer: The mural is 6 feet by 10 feet, so it has an area of 6 * 10 = <<6*10=60>>60 square feet. Each gallon of paint covers 200...
Michael is helping to put away books. He has 120 books to put away. He can fit 20 books on each shelf. If he has 5 partially filled shelves, how many new shelves will he need to put away all his books? Answer: First find how many books Michael has already put away: 20 books/shelf * 5 shelves = <<20*5=100>>100 books T...
A runner is getting ready for a race. He ran 350 meters in the morning and 480 meters in the afternoon. How many meters did he run in all? Answer: The runner ran 350 + 480 = <<350+480=830>>830 meters in all. #### 830 Question: A runner is getting ready for a race. He ran 350 meters in the morning and 480 meters in th...
A farmer plants 15 rows of carrots in a field that is 400 meters long and 50 meters wide. The rows are 4 meters apart, end to end. The farmer plants 10 carrots in each row. How many carrots did the farmer plant? Answer: There are 400/4 = 100 rows of carrots in the field. The farmer plants 10 carrots in each row, so t...
The price of a t-shirt was $20. It was first discounted by 20%. It was then discounted by another 15% a month later. What is the final price of the t-shirt? Answer: The first discount takes 20% off of the original price, or 0.20 * $20 = $4.00 Thus, the new price is $20 - $4 = $<<20-4=16>>16 The second discount takes ...
On a hot day, 200,000 hot dogs are eaten at a hot dog eating contest that lasts for 10 hours. If the second-place contestant eats hot dogs at a rate of 10,000 hot dogs per hour, how many hot dogs does the winner eat per minute if he/she eats 5,000 more hot dogs than the second-place contestant? Answer: The second-pla...
There are 30 boxes to be moved out of a house. Bob can carry 3 boxes at a time, Pedro can carry 2 boxes at a time, and Jameelah can carry 1 box at a time. If each person takes an equal number of trips, how many trips will be needed to move all of the boxes? Answer: The number of boxes carried by Bob, Pedro, and Jamee...
The cost of a water bottle is $2. If Martin buys 5 water bottles, how much does he pay in total? Answer: The total cost is $2 * 5 = <<2*5=10>>10 #### 10 Question: A school has 400 students. If 60% of the students are boys, how many girls are there in the school? Answer: If 60% of the students are boys, then 100% - 6...
If Matt can only work 30 hours a week and he makes $12 an hour, how many weeks does it take to make $1440? Answer: First, find the amount of money Matt makes in one week by multiplying the number of hours he works by his hourly wage: 30 hours * $12/hour = $360/week Then, find the number of weeks it takes for Matt to ...
A grocery store sells one case of water for $\$12$, and a store sells 20 cases of water. How much is the store making from the sale of the water? Answer: The store is making $\$12 * 20 = \$<<12*20=240>>240$ from the sale of the water. #### 240 Question: A grocery store sells one case of water for $\$12$, and a store ...
The sum of 4 consecutive odd numbers is 40. What is the second number in this sequence? Answer: Let the four consecutive odd numbers be x, x+2, x+4, and x+6. x + (x+2) + (x+4) + (x+6) = 40 4x + 12 = 40 4x = 28 x = 7 The second number in the sequence is x+2, which is 7+2 = <<7+2=9>>9 #### 9 Question: A bag of 10 orang...
A man works 12 hours a day for 6 days a week. He earns $9 an hour for working during the weekdays and 1.5 times that amount per hour for working during the weekends. How much does the man earn in a week? Answer: The man works 12 hours a day for 6 days a week, so he works 12 * 6 = 72 hours during the weekdays. The man...
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 55% salt and Solution B is 80% salt. She wants to obtain 120 ounces of a mixture that is 65% salt. How many ounces of each solution should she use? Answer: Let x be the amount of Solution A...
12 friends went to the local movie theater to see a movie. 45% of the group are girls. If all of the boys paid $8 each for their ticket, how much money did the boys spend altogether? Answer: 45% of 12 is 12 * 0.45 = <<12*0.45=5.4>>5.4, so there are 5 girls and 7 boys. The boys paid $8 each, so they spent 7 * $8 = <<7...
Charlie bought 6 oranges for $4. If he was given a discount of $1 for buying six oranges, how much did Charlie pay per 1 orange? Answer: The cost of 6 oranges is $4 - $1 = $<<4-1=3>>3 The cost of 1 orange is $3 / 6 = $<<3/6=0.5>>0.5 #### 0.5 Question: There are 200 pages in a book. If Lucy reads 20 pages a day, how m...
A fruit salad is made up of cantaloupe, strawberries, and bananas. If a salad requires 1 pound of cantaloupe, 4 ounces of strawberries, and 8 ounces of bananas, how many total ounces of fruit are in the salad? Answer: 1 pound of cantaloupe = 1 * 16 = <<1*16=16>>16 ounces 4 ounces of strawberries = 4 ounces 8 ounces o...
A total of 420,000 stock shares were sold in a company last week. On Monday, 40,000 shares were sold. On Tuesday, 50,000 more shares were sold than on Monday. On Wednesday, the number of shares sold was triple the number of Tuesday. How many shares were sold on Thursday? Answer: On Tuesday, 40,000 + 50,000 = <<40000+...
In a wildlife sanctuary, there are 20 elephants and 25 giraffes. How many animals are there in total? Answer: To find the total number of animals, we add the number of elephants to the number of giraffes: 20 + 25 = 45 #### 45 Question: A group of 15 friends decided to split the cost of a $120 dinner bill equally. How...
The price of one share of HMMT increased by a point each day for four days in a row. On the fifth day, it dropped by four points from the previous day's closing price. The price of one share of HCMT increased by 2 points each day. If the price of one share of HMMT and HCMT was the same at the end of the fifth day, wha...
250 students are involved in exactly one of three activities: theater, music, and dance. 112 students are involved in theater, 65 students are involved in music, and 31 students are involved in both theater and music but not dance. How many students are involved in dance? Answer: 112 students are involved in theater,...
David is trying to join a club at his first-year university in which each member must run a lap through the university's sports field in under 9 minutes (600 seconds). David has run 75% of the lap in 60 seconds. How much time does he have left to complete the lap? Answer: David has run 75% of the lap in 60 seconds, w...
There are 500 cows in a field and 60% of those cows are black and white. Each black and white cow produces 3 gallons of milk a day. If a quart is 1/4 of a gallon, how many quarts of milk are produced by the black and white cows in a day? Answer: The number of black and white cows is 60% of 500, or 0.6 * 500 = <<0.6*5...
There are 500 students in a school. 40% of them are boys. How many boys are in the school? Answer: 40% of 500 is 0.4 * 500 = 200 #### 200 Question: If there are 250 students in a school and 10 teachers, and each teacher can teach 5 classes, how many classes can the school offer? Answer: 10 teachers * 5 classes/teach...
A grocery store had 100 bottles of regular soda, 70 bottles of diet soda, and 80 bottles of sparkling water. At the end of the day, 40 bottles were left unsold. How many bottles of each type of beverage were sold? Answer: The total number of bottles at the beginning of the day was 100 + 70 + 80 = <<100+70+80=250>>250...
There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block. What is the probability that a randomly selected family used H&R Block? Answer: The probabi...
A cook had 150 eggs in the refrigerator. He used 20 eggs for cakes, 30 for omelets, and 15 for scramble. How many eggs were left? Answer: First, add up the total number of eggs the cook used: 20 + 30 + 15 = <<20+30+15=65>>65 Then, subtract the number of eggs used from the total number of eggs: 150 - 65 = <<150-65=85>...
There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block. What is the probability that a randomly selected family had their taxes prepared by H&R Blo...
A marathon is 26.2 miles long. If someone runs two marathons back-to-back, how many kilometers did he run? (1 kilometer = 0.62 miles) Answer: If the distance of one marathon is 26.2 miles, then the distance of two marathons is 26.2 miles * 2 = <<26.2*2=52.4>>52.4 miles If one kilometer is 0.62 miles, then the distanc...
A family just bought a house that sold for $450,000. The house had 3 bedrooms and 2 bathrooms. If the price of the house is 200 times the cost of each bedroom and 100 times the cost of each bathroom, how much is each room worth? Answer: The cost of each bedroom is $450,000 / 200 = $<<450000/200=2250>>2250 The cost of...
Jack bought 55 apples. He wants to give 10 to his father and 5 to his neighbor. Then, he wants to equally share the remaining apples between him and his 4 friends. How many apples will each of them get? Answer: Jack gives away 10 + 5 = <<10+5=15>>15 apples, leaving him with 55 - 15 = <<55-15=40>>40 apples. He wants t...
A baker has orders from three schools for his cakes. School A ordered 50 cakes, school B ordered 75 cakes, and school C ordered 100 cakes. If the baker can bake 25 cakes in a day, how many days will it take him to complete all the orders? Answer: The total number of cakes ordered is 50 + 75 + 100 = <<50+75+100=225>>2...
On a ferry, there are 50 cars and 10 trucks. The cars have an average mass of 1200 kg and the trucks have an average mass of 3000 kg. What is the average mass of all 60 vehicles on the ferry? Answer: The total mass of the cars is 50 * 1200 = <<50*1200=60000>>60,000 kg The total mass of the trucks is 10 * 3000 = <<10*...
If a person can buy 8 oranges for $2.32, what's the cost of one orange? Answer: The cost of one orange is $2.32 / 8 = $<<2.32/8=0.29>>0.29 #### 0.29 Question: One hundred students were asked to name their favorite sports. One fourth of the girls and two thirds of the boys said basketball was their favorite sport. If ...
A scientist has a 100 ml bottle of a solution that is 20% acid. How many ml of a 30% acid solution should be added to the bottle to make a solution that is 24% acid? Answer: Let x be the amount of 30% acid solution to be added. The total volume of the solution will be 100 + x ml. The amount of acid in the 20% solutio...
There are 2000 cookies in a cookie jar. 25% of the cookies are chocolate chip, 1/5 of the rest are peanut butter, then the rest are sugar cookies. How many cookies are chocolate chip and peanut butter cookies altogether? Answer: There are 2000 * 25% = 2000 * 0.25 = <<2000*0.25=500>>500 chocolate chip cookies. The res...
A man works 10 hours a day and earns $5000 per month. If he saves 20% of his earnings each month, how much does he save in a year? Answer: The man earns $5000 per month, so in a year he earns 12 * $5000 = $<<12*5000=60000>>60000. He saves 20% of his earnings each month, so in a year he saves 0.2 * $60000 = $<<0.2*600...
If there are 25 people in the swimming pool, how many people are in the sauna if the sauna holds 10 less people than the swimming pool? Answer: If there are 25 people in the swimming pool, then there are 25 - 10 = <<25-10=15>>15 people in the sauna. #### 15 Question: If 3 people get on the bus, but 2 people get off, ...
Two trains leave the station at the same time but travel in opposite directions. One train is going at 30 mph and the other is going 25 mph. How long will it take for them to be 180 miles apart? Answer: If the trains are traveling at 30 mph and 25 mph, they will be traveling at a rate of 30 + 25 = <<30+25=55>>55 mile...
Tom is a regular customer and gets a 10% discount on each bag he buys after the first 10. How much money does he save on 20 bags that cost $50 each? Answer: The first 10 bags cost 10*$50 = $500 The last 10 bags cost 10*($50*0.9) = $450 The total cost is $500 + $450 = $950 Without the discount, the total cost would ha...
If a person eats 7 meals a day, how many meals will he eat in a year that is not a leap year? Answer: There are 365 days in a year that is not a leap year. Thus, the person will eat 7 x 365 = <<7*365=2555>>2555 meals. #### 2555 Question: A grocery store sells oranges for $0.50 each and apples for $0.75 each. If a cus...
A grocery store sells one case of juice for $12. They sell 15 cases a day. How much money will the store make in 2 weeks? Answer: There are 7 days in a week, so there are 7 * 2 = <<7*2=14>>14 days in 2 weeks. If the store sells 15 cases a day, then they sell 15 * 14 = <<15*14=210>>210 cases in 2 weeks. If each case c...
Each table in the cafeteria seats 8 people. Find the total number of people that can be seated at 7, 8, 9, and 10 tables if the tables are arranged in a U-shape. Answer: Each table seats 8 people, so 7 tables would seat 7 * 8 = <<7*8=56>>56 people 8 tables would seat 8 * 8 = <<8*8=64>>64 people 9 tables would seat 9 ...
The sum of 3 consecutive numbers is 78. What is the smallest of the 3 numbers? Answer: Let x be the smallest number The next two numbers are x+1 and x+2 x + (x+1) + (x+2) = 78 3x+3 = 78 3x = 75 x = 75/3 = 25 #### 25 Question: A machine that manufactures bike parts produces 12 parts in 5 minutes. If the machine keeps ...
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 65% salt and Solution B is 90% salt. She wants to obtain 130 ounces of a mixture that is 80% salt. How many ounces of each solution should she use? Answer: Let x be the number of ounces of ...
In a certain school, there are 200 students in the 5th grade and 70% of them are girls. There are 150 students in the 6th grade and 60% of them are girls. How many more boys are there in the 5th grade than in the 6th grade? Answer: 70% of 200 is 200 * 70/100 = 140, so there are 200 - 140 = 60 boys in the 5th grade. 6...
A certain type of tomato costs $0.60 for a pack of six. If Maria needs 24 tomatoes, how much will she spend? Answer: Maria needs 24/6 = <<24/6=4>>4 packs of tomatoes. Each pack costs $0.60, so she will spend 4 * $0.60 = <<4*0.6=2.4>>$2.40. #### 2.40 Question: It takes 10 people 30 minutes to paint 10 walls. How long ...
Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasn't yet read. How many pages has he not yet read? Estimate how many days it will take Peter to finish the book if he reads about 8 pages per day. Answer: Let x be the number of pages Peter has not yet read. The...
A grocery store sells one third of its strawberries by the end of the day. The grocery store then sells three fourths of the remaining strawberries by the end of the second day. What fraction of strawberries did the store sell on the second day? Answer: On the first day, the grocery store sold one third of its strawb...
Jim is 25 years old. He is 20 years older than 5 times the age of his niece. How old is Jim's niece? Answer: Let x be the age of Jim's niece. 5x+20=25 5x=5 x=1 #### 1 Question: The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child? Answer: Let x b...
If John makes $60,000 a year and Mary makes $80,000 a year, how much more does Mary make each month that John? Answer: First find the total difference in the amount of money John and Mary make each year: $80,000 - $60,000 = $<<80000-60000=20000>>20,000 Then divide the yearly difference by 12 to find the difference in...
If there are 100 students in the class and the ratio of boys to girls is 3:2, how many boys and girls are there in the class? Answer: Let the number of boys be 3x and the number of girls be 2x. The total number of students is 3x + 2x = 100. 5x = 100 x = 20 The number of boys is 3x = 3 * 20 = 60. The number of girls i...
A man works 10 hours a day and earns $500 for each work. He works 40 hours a week. What fraction of his total weekly earnings does he earn per hour? Answer: The man earns $500 per day, so he earns $500 * 10 = $<<500*10=5000>>5000 per week. He works 40 hours a week, so the fraction of his total weekly earnings he earn...
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A rectangular prism has a width of 3 inches, a height of 5 inches, and a depth of 8 inches. What is the volume of the prism? Answer: The volume of a rectangular prism is given by the formula length x width x height In this case, the volume is 3 x 5 x 8 = <<3*5*8=120>>120 cubic inches #### 120 Question: What is the su...
A bucket can hold 5 liters of water. If a tank can hold 40 times as much water as the bucket, how many liters of water can the tank hold? Answer: The tank can hold 40 times the amount of water that the bucket can hold. Since the bucket can hold 5 liters, the tank can hold 40 * 5 = <<40*5=200>>200 liters of water. ###...
Bob can read 30 pages in an hour. If he reads for 5 hours on Saturday and 6 hours on Sunday, how many pages does he manage to read in total? Answer: Bob can read 30 pages in an hour. He reads for 5 hours on Saturday, so he reads 30 x 5 = <<30*5=150>>150 pages. Bob can read 30 pages in an hour. He reads for 6 hours on...
In one minute of exercise, Robert can burn 30 calories. In one hour of exercise, he can burn how many calories? Answer: There are 60 minutes in one hour. The number of calories Robert can burn in one hour is 30 calories/minute * 60 minutes/hour = <<30*60=1800>>1800 calories #### 1800 Question: Mike earns $7 a week by...
In 2014, 20% of the children at a certain school had asthma. In 2015, only 5% of the children at this school had asthma. If the number of children in the school remained constant, what fraction of the children who had asthma in 2014 no longer had asthma in 2015? Answer: In 2014, 20% of the children had asthma. This c...
A new office building has 14 floors. Mr. Juarez lives on the 14th floor and works on the 1st floor. Every morning, he takes the elevator to the floor he lives on, except on Fridays when he takes the elevator to the floor he works on. How many times will he take the elevator each month if the building has 25 working da...
Kevin's mother gave him $100 to buy some school supplies. He bought 4 notebooks at $5 each, 3 boxes of crayons at $4 each, and 2 packs of pencils at $3 each. How much money did Kevin have left after buying the school supplies? Answer: Kevin spent 4 notebooks * $5/notebook + 3 boxes of crayons * $4/box + 2 packs of pe...
A rectangle's length is (x+4) inches and its width is (2x-1) inches. Write an expression for its area in terms of x. Answer: The area of a rectangle is length times width. The area of the rectangle is (x+4)(2x-1) = <<(x+4)*(2x-1)=2*x^2+7*x-4>>2x^2 + 7x - 4 #### 2x^2 + 7x - 4 Question: The length of a rectangle is 2 i...
Jake decides to go to the park every 7 days and to the gym every 5 days. If he goes to both places today, on what day of the week will he go to both places again? Answer: The lowest common multiple of 7 and 5 is 35. So, Jake will go to both places again on the 35th day after today. Since today is a Monday, the 35th d...
There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block. What is the probability of selecting a family that prepared their own taxes? Answer: There...
A rectangular prism has a width of 3 inches, a height of 4 inches, and a length of 5 inches. What is the volume of the prism? Answer: The volume of a rectangular prism is given by the formula V = lwh, where l is the length, w is the width, and h is the height. Substituting the given values, we get V = 5 inches * 3 in...
A grocery store sells one case of soda for $19, while a case of 24 cans of soda sells for $11. How much money, in dollars, will you save if you buy 3 cases of 24-cans-of-soda at one time? Answer: The cost of 3 cases of soda is 3*$19 = $57 The cost of 3 cases of 24 cans of soda is 3*$11 = $33 The money saved is $57 - ...
David had 96 marbles. Out of the marbles, 1/4 of them were blue, 3/8 of them red, and the rest were yellow. What is the difference in the number of yellow marbles and red marbles? Answer: The number of blue marbles is 96 x 1/4 = 96/4 = 24 The number of red marbles is 96 x 3/8 = 3 x 96/8 = 3 x 12 = 36 The number of ye...
A grocery store had a total of 430 bottles of which 250 were bottles of apple juice. The rest were bottles of grape juice. How many more bottles of apple juice than bottles of grape juice did the store have? Answer: There were 430 - 250 = <<430-250=180>>180 bottles of grape juice. There were 250 - 180 = <<250-180=70>...
At a restaurant, Mike and his three friends decided to divide the bill evenly. If each person paid $13 then what was the total bill? Answer: Each person paid $13, and there are 4 people in total. Therefore, the total bill is $13 * 4 = <<13*4=52>>52 #### 52 Question: A scientist has two solutions, which she has labele...
A factory can produce 12 tables each hour. If it works 9 hours per day, how many tables can it produce in 2 weeks? Answer: In one day, the factory can produce 9 * 12 = 108 tables. In 2 weeks, the factory can produce 108 * 14 = 1512 tables. #### 1512 Question: In 1998, a farmer0 owned 5 strawberry plants. Each year, h...
There are 500 zombies in a shopping mall. If the number of zombies doubled every day, in how many days will there be 51200 zombies? Answer: Since the number of zombies doubles every day, we can find the number of days it takes for the number of zombies to reach 51200 by finding the power of 2 that is closest to 51200...
A family of 4 went out for dinner. They paid $32 for the meal and $4 for the tip. If they split the cost equally, how much did each family member pay? Answer: The family paid a total of 32 + 4 = $36 for the meal and tip. If they split the cost equally among the 4 family members, each member paid 36 / 4 = $<<36/4=9>>9...
A grocery store sells one case of soda for $17, while a case of 24 cans of soda sells for $38. How much money, in dollars, will you save if you buy 384 cans of soda? Answer: There are 24 cans of soda in a case, so 384 cans of soda is equal to 384/24 = <<384/24=16>>16 cases. Buying 16 cases at $17 per case costs 16 x ...
A painter charges $12 per hour. A fence is 150 feet long, and it needs two coats of paint. It takes 3 hours to paint 125 feet. How much does it cost to paint the fence? Answer: It takes 3 hours to paint 125 feet, so it takes 3 * (150 / 125) = 3 * 1.2 = 3.6 hours to paint the fence. Since there are two coats of paint,...
Three friends are buying tickets for a concert. Each ticket costs $20 and they have to pay an additional 8% for tax. The second person pays $50, and the third person pays half of what the first person pays. The first person gets a 15% discount on the total ticket price. How many dollars do they spend in total? Answer...
A scientist has a jar of bacteria which double every minute. After one hour, she sees that the jar is full of bacteria. After how many minutes was the jar half full? Answer: Since the bacteria double every minute, the jar was half full one minute before it was full. One hour is equal to 60 minutes, so the jar was hal...