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Question: Jihoon cut a fishing line to make a fishing rod. When you add 3.1 meters (m) to the current length of this fishing line, multiply it 3.1 times, and then multiply it again by 2.1 it becomes the length of the original fishing line. If the length of the fishing line of Ji-hoon's fishing rod is 8.9 meters (m), fi...
Question: There were 7 buses in the parking lot, but after a while 6 more came. How many buses are currently in the parking lot? Answer: Initially, there were 7 buses in the parking lot. Then, 6 more buses came. To find the total number of buses currently in the parking lot, you add the 6 buses to the initial 7 buses: ...
Question: There are four numbers in total: 0.8, 1/2, 0.5, and 1/3. How many of them are greater than or equal to 3? Answer: None of the numbers listed (0.8, 1/2, 0.5, and 1/3) are greater than or equal to 3. All of them are less than 1.
Question: Two boxes A and B have been delivered. Yoojeong is going to take the smaller of the two boxes. If the box A is bigger than the box B, which box should Yoojeong take? Answer: Yoojeong should take box B, as it is the smaller of the two boxes.
Question: There is a cube with a side length of 8 centimeters (cm). What is the surface area of this cube? Answer: The surface area of a cube is calculated by finding the area of one of its faces and then multiplying that by 6, since a cube has 6 faces and they are all identical squares. The area of one face of the cu...
Question: I am trying to make a square as small as possible by arranging rectangular bricks 12 centimeters (cm) wide and 15 centimeters (cm) long without overlapping. How many bricks will you need altogether? Answer: To make a square using rectangular bricks that are 12 cm wide and 15 cm long, we need to find a common ...
Question: The blue bus takes 4 hours to cover 200 kilometers (km), and the green bus takes 3 hours to cover 180 kilometers (km). What color bus should you use to get to the destination quickly? Answer: To determine which bus is faster, we need to calculate the average speed of each bus. For the blue bus: Speed = Dista...
Question: A cube with a volume of 3375 cubic centimeters (cm3) is made by stacking building blocks with a volume of 1 cubic centimeters (cm3). How many layers are there in this building of cubes? Answer: To find out how many layers there are in the building of cubes, we first need to determine the dimensions of the cub...
Question: How many diagonals can be drawn in a rectangle? Answer: In a rectangle, there are two diagonals that can be drawn. Each diagonal connects a pair of opposite vertices (corners) of the rectangle.
Question: There are three numbers 10, 11, and 12. What is the product of the second largest number and the second smallest number? Answer: The three numbers are 10, 11, and 12. The second smallest number is 11. The second largest number is also 11. The product of the second smallest number and the second largest numb...
Question: Seokjin, Hoseok, and Namjoon took a math test. Namjoon's math score is higher than Hoseok's math score, and Seokjin's math score is higher than Hoseok's math score. If Seokjin's math score is lower than Namjoon's math score, who has the highest math score? Answer: Namjoon has the highest math score.
Question: You want to add 24 to some number. If the answer when adding 42 incorrectly is 50, what is the correct calculation result? Answer: If the incorrect result when adding 42 is 50, then the original number before adding 42 was 50 - 42 = 8. Now, to find the correct result when adding 24 to the original number, we...
Question: 73 is the result when you subtract 50 from a number, divide it by 4, multiply this by 3 again, and then add 28. What is this number? Answer: Let's call the number we are looking for "x". According to the problem, we perform the following operations on x: 1. Subtract 50 from x. 2. Divide the result by 4. 3. M...
Question: Among the students standing in line, Yoongi is standing where 7 people are on the left and 5 people are on the right. Including Yoongi, how many people are standing in line? Answer: If Yoongi has 7 people to his left and 5 people to his right, then there are 7 + 5 = 12 people besides Yoongi. Including Yoongi,...
Question: Yuna, Taehyung, and Jimin are going to choose two among them to do the chores. How many different cases are there in all? Answer: To determine the number of different cases for choosing two people out of three (Yuna, Taehyung, and Jimin) to do the chores, we can use the combination formula which is given by: ...
Question: A rectangle was made with a 40 centimeters (cm) wire. If the length of one side is 8 centimeters (cm), what is the length of the other side in centimeters (cm)? Answer: To find the length of the other side of the rectangle, we need to use the perimeter formula for a rectangle, which is: Perimeter (P) = 2 * (...
Question: When multiplied by 4, this number became 28. Find this number. Answer: To find the number, you need to divide 28 by 4. 28 ÷ 4 = 7 So the number is 7.
Question: If 9 more people left the bus than the ones who got on at the stop, how many people are on the bus now given that the bus originally had 38 people on it? Answer: Let's say x people got on the bus at the stop. According to the information given, 9 more people left the bus than the ones who got on. So, the numb...
Question: Jimin, Yoongi, Taehyung, and Namjoon have different numbers of apples. If Taehyung has fewer than Namjoon, Jimin has more than Yoongi, and Yoongi has more than Namjoon, who has the fewest apples? Answer: Based on the information provided: 1. Taehyung has fewer apples than Namjoon. 2. Jimin has more apples th...
Question: What is the sum of the number of vertices and the number of sides of a triangle? Answer: A triangle has 3 vertices and 3 sides. So, the sum of the number of vertices and the number of sides is 3 + 3 = 6.
Question: The chicken laid 59 more eggs today than yesterday. If the chicken laid 10 eggs yesterday, how many eggs did it lay today? Answer: If the chicken laid 10 eggs yesterday and 59 more today, then today the chicken laid 10 + 59 = 69 eggs.
Question: Heeju's school has 500 students. Among them, 289 students like mountains and 337 students like the sea. If there are 56 students who neither like the mountains nor the sea, how many students like both the mountains and the sea? Answer: Let's denote the following: - M as the number of students who like mounta...
Question: You want to create four-digit numbers by using the numbers 7, 2, 5, and 9. How many four-digit numbers can you make? The same number can appear multiple times. Answer: Since repetition is allowed and there are four choices for each digit, for a four-digit number, you can choose any of the four numbers for eac...
Question: I am trying to find the radius of a lake that has the shape of a circle. If the diameter of this lake is 26 meters (m), what is the radius of the lake in meters (m)? Answer: The radius of a circle is half the diameter. So, if the diameter of the lake is 26 meters, the radius would be: Radius = Diameter / 2 R...
Question: When A is divided by 5, the quotient is 2 and the remainder is B. A and B are both natural numbers. What is the largest possible value of B? Answer: When a number A is divided by 5, the remainder B can be any number from 0 to 4 because once the remainder reaches 5, it would be divisible by 5 and would be adde...
Question: Taehyung and Minyoung had a walking race. One minute later, Taehyung walked 114 meters (m) and Minyoung walked 79 meters (m). After 1 hour, how many meters (m) will Taehyung have walked more than Minyoung? Answer: First, let's find out how many meters Taehyung and Minyoung walk in one minute. Taehyung walks ...
Question: Three points are not in a straight line. How many straight lines can you make with these three points? Answer: With three points that are not in a straight line, you can form three straight lines by connecting each pair of points. Each line is formed by connecting two points, so the combinations are: 1. Line...
Question: 2/7 of the sports day participants are on the white team and 3/8 are on the blue team. Which team has more participants? Answer: To determine which team has more participants, we need to compare the fractions 2/7 and 3/8. To do this, we can find a common denominator for both fractions and then compare the num...
Question: You are going to make the largest square out of a piece of string that is 24 centimeters (cm) long. How many centimeters (cm) is the length of one side of the square? Answer: To make a square out of a piece of string, all four sides of the square must be of equal length. Since the string is 24 cm long, we nee...
Question: Yoojung has 32 flowers. The number of flowers Yoojung has is 4 times the number of flowers Namjoon has. How many flowers do Yoojung and Namjoon have? Answer: To find out how many flowers Namjoon has, we need to divide the number of flowers Yoojung has by 4, since Yoojung has 4 times the number of flowers Namj...
Question: Adding 2 to a particular number and subtracting 6, and multiplying it by 3 and dividing it by 4 equals 3. Find that particular number. Answer: Let's call the particular number \( x \). According to the problem, we add 2 to \( x \), subtract 6, multiply the result by 3, and then divide by 4 to get 3. So, the...
Question: We added 2 to a certain number and then subtracted 6. Multiply this by 3 and then divide by 4 and we get 3. What is that number? Answer: Let's call the certain number "x". According to the problem, we first add 2 to x, then subtract 6, multiply the result by 3, and finally divide by 4 to get 3. So, the equa...
Question: If the sum of the weights of Jiho, Sanghyeon, and Seungju is greater than 280 and the remainder is 30 when divided by 70, what is the minimum sum of the weights of the three people? Answer: Let's denote the sum of the weights of Jiho, Sanghyeon, and Seungju as S. According to the problem, S > 280 and when S i...
Question: I bought 7 bags of chocolates, each containing 16 pieces. Thirteen of them melted in the hot sun, and when I try to divide the remaining chocolates equally into 8 bags, how many chocolates are left that cannot fit into the bags? Answer: First, let's calculate the total number of chocolates you originally had:...
Question: Taehyung, Minju, Sangmin, Yoonjung, and Yoojeong crossed the finish line in that order. Who went in first? Answer: Taehyung went in first.
Question: All 27 small cubes with an edge length of 1 centimeter (cm) were used to create one large cube with an edge length of 3 centimeters (cm). I painted all sides of the large cube and then separated it into smaller cubes. How many cubes have three painted faces? Answer: When you create a larger cube from smaller ...
Question: How many cases are available if you choose and buy 2 different fruits among apples, peaches, pears, melons, and tangerines? Answer: To find the number of cases available when choosing 2 different fruits from a set of 5 different fruits (apples, peaches, pears, melons, and tangerines), you can use the combinat...
Question: What is the area of a square with side length 3 plus the area of a parallelogram with base 3 and height 2? Answer: To find the total area, we need to calculate the area of the square and the area of the parallelogram separately and then add them together. The area of a square is given by the formula: Area of...
Question: It is said that the total amount of sugar in 12 cups of coffee is 84.6 grams (g). If 12 cups contain the same amount of sugar, find how many grams (g) of sugar are in a cup of coffee. Answer: To find the amount of sugar in one cup of coffee, you would divide the total amount of sugar by the number of cups. ...
Question: There is a prism made up of six squares. If the sum of the lengths of all the edges of this prism is 72 centimeters (cm), how many centimeters (cm) is the length of one edge? Answer: A prism made up of six squares is a cube, as each face of the cube is a square. A cube has 12 edges, and since it's symmetrica...
Question: Seulgi and Hyeonjeong went to the stationery store and bought pencils. If Seulgi bought 9 pencils and Hyunjeong bought 12 pencils, who bought more pencils among Seulgi and Hyunjeong? Answer: Hyunjeong bought more pencils than Seulgi because Hyunjeong bought 12 pencils while Seulgi bought 9 pencils.
Question: If the radius of a round pancake is 7 centimeters (cm), how many centimeters (cm) is the diameter of the pancake? Answer: The diameter of a circle is twice the radius. So, if the radius of the pancake is 7 centimeters, the diameter would be: Diameter = 2 × Radius Diameter = 2 × 7 cm Diameter = 14 cm Therefo...
Question: How many trees are needed if you plant trees from start to finish on one side of a 100-meter (m) road at 10-meter (m) intervals? Answer: If you are planting trees at 10-meter intervals along a 100-meter road, you would start by planting the first tree at the beginning of the road. Then, every 10 meters, you w...
Question: I am going to attach paintings with a width of 30 centimeters (cm) in a row on the wall of an exhibition hall with a width of 3 meters (m) and 20 centimeters (cm). How many centimeters (cm) should be the distance between the end of the wall and the artwork and between the artworks so that all six pieces are p...
Question: How many numbers greater than 50 and less than 100 are divisible by 8? Answer: To find the numbers greater than 50 and less than 100 that are divisible by 8, we need to find the first number greater than 50 that is divisible by 8 and then find the last number less than 100 that is divisible by 8. Then we can ...
Question: Cucumbers are sold for 300 won per 100 grams (g). Determine how many kilograms (kg) of cucumbers you can buy with 7,500 won, including the decimal point. Answer: First, let's convert the price of cucumbers to a per kilogram basis. Since there are 1000 grams in a kilogram, we need to find out how much 1000 gra...
Question: Juhye used 1/4 of her money and 2/3 of the money she had left to buy a notebook and lunch, leaving 2,500 won at the end. How much money did Juhye have at first? Answer: Let's denote the total amount of money Juhye had at first as \( M \). According to the problem, Juhye first used \( \frac{1}{4} \) of her mo...
Question: Seokgi had 82 sheets of colored paper. If the number of colored paper left is 6 less than the number of pieces of colored paper used for making a piece of art, find how many pieces of colored paper were used. Answer: Let's denote the number of pieces of colored paper used for making a piece of art as x. Accor...
Question: A box of apples weighs 3/5 kilograms (kg) and a box of tangerines weighs 0.49 kilograms (kg). Which box is heavier? Answer: To compare the weights of the two boxes, we need to ensure that they are in the same units. The box of apples is given in kilograms as a fraction (3/5 kg), and the box of tangerines is g...
Question: I made a figure using all 9 sticks, each 2 centimeters (cm) long. Find the perimeter of this figure with all the same angles and 9 sides. Answer: If you have a figure with 9 sides (nonagon) and each side is made from a stick that is 2 cm long, then the perimeter of the figure would be the sum of the lengths o...
Question: What do you get when adding all natural numbers that are less than or equal to 31 and greater than 28? Answer: To find the sum of all natural numbers that are less than or equal to 31 and greater than 28, we simply need to add the numbers 29, 30, and 31 together. 29 + 30 + 31 = 90 So, the sum of all natural...
Question: If you add A to 10, you get 15. How much is A? Answer: If you add A to 10 and get 15, then A is equal to 15 minus 10. A = 15 - 10 A = 5 So, A is 5.
Question: Seokjin has 3 marbles. Yuna has 1 less marble than Seokjin. Jimin has 2 times more marbles than Seokjin. How many more marbles does Jimin have than Yuna? Answer: Seokjin has 3 marbles. Yuna has 1 less marble than Seokjin, so Yuna has 3 - 1 = 2 marbles. Jimin has 2 times more marbles than Seokjin, so Jimin h...
Question: The 30 students in Minsu's class have their own attendance numbers from 1 to 30. Among the students in Minsu's class, the students wearing glasses are students 1, 3, 7, 10, 23, and 27, and the students with their hair tied are students 1, 9, 11, 20, and 23. How many students both wear glasses and have their h...
Question: The length of one edge of a cube is 7 centimeters (cm). If you are going to glue all the colored paper to the surface of this cube, find the area of the colored paper you will need. Answer: To find the area of colored paper needed to cover the surface of a cube, we need to calculate the total surface area of ...
Question: Subtracting 44 from a number gives 15. What number is it? Answer: To find the number, we can set up an equation: number - 44 = 15 Now, we add 44 to both sides of the equation to solve for the number: number - 44 + 44 = 15 + 44 number = 59 So the number is 59.
Question: You plan to bake several of the largest cookies by cutting out a rectangle dough measuring 24 centimeters (cm) long and 18 centimeters (cm) wide. How many cookies can you make in all without any leftover? Answer: To determine how many of the largest cookies you can make from a rectangular dough measuring 24 c...
Question: I need to add 32 to a number, but I mistakenly subtracted 32, so I got 33. Find the result of the correct calculation. Answer: If you mistakenly subtracted 32 from a number and got 33, it means the original number before the mistake was: 33 + 32 = 65 Now, to find the result of the correct calculation where ...
Question: There are 28 identical bookshelves in the library. Each bookshelf has 6 floors, and the number of books on each floor is the same. It is said that when the first book and the last book were removed from a shelf, there were 20 books left on that floor. How many books are on the shelves in the library? Answer: ...
Question: Sunkyung drew all the diagonals of an octagon. How many lines did she draw in total? Answer: To find the number of diagonals in an octagon, we can use the formula for the number of diagonals in any polygon: Number of diagonals = n(n - 3)/2 where n is the number of sides in the polygon. For an octagon, n = ...
Question: Which of these has a larger volume, cuboid A with a base area is 8 square centimeters (cm2) and a height of 3 centimeters (cm), or cube B with a side length of 5 centimeters (cm)? Answer: To compare the volumes of the two shapes, we need to calculate the volume of each. For cuboid A, the volume (V) is calcul...
Question: Yuna's father is 27 years older than Yuna and her grandfather is 23 years older than her father. If Yuna is 9 years old this year, how old is Yuna's grandfather this year? Answer: If Yuna is 9 years old, her father is 27 years older than her, so her father is: 9 years (Yuna's age) + 27 years = 36 years old. ...
Question: The length of one side of a cube-shaped die is 9 centimeters (cm). Choose one side of the die and find how many centimeters (cm) is the sum of the lengths of the sides that make up this side. Answer: A cube has six faces, each of which is a square. If we choose one side of the die, we are looking at one squar...
Question: There are 20 apples in the bag. How many apples are in all 5 bags? Answer: If there are 20 apples in one bag, then in 5 bags there would be: 20 apples/bag × 5 bags = 100 apples So, there are 100 apples in all 5 bags.
Question: Hyeonho's class teacher bought a large sheet of paper from a stationery store to make name tags for 24 students in the shape of a square with a side length of 4 centimeters (cm). If the teacher miscalculated the length and bought a piece of paper with a width of 34 centimeters (cm), and after making the name ...
Question: I should add 479 to a certain number, but the result I get by accidentally subtracting 749 from a certain number is 280. Find the correct calculated value. Answer: Let's call the certain number you're referring to as "x". According to the problem, you accidentally subtracted 749 from x, and the result was 28...
Question: Find the sum of all two-digit numbers that can be formed by using the numbers 2 and 5 as duplicates. Answer: To find the sum of all two-digit numbers that can be formed by using the numbers 2 and 5 as duplicates, we need to consider all possible combinations: 1. 22 2. 25 3. 52 4. 55 Now, we simply add these...
Question: How many total cases can you pay with 4 500-won coins, 2 100-won coins, and 5 10-won coins (excluding the case where the payment amount is 0 won is)? Answer: To find the total number of cases you can pay with the given coins, we need to consider all the possible combinations of coins that can be used to make ...
Question: How many faces of an icosahedron meet at a vertex? Answer: An icosahedron is a polyhedron with 20 faces, each of which is an equilateral triangle. At each vertex of an icosahedron, five faces meet.
Question: Minsu wants to color the faces of the pentagonal prism. How many colors do you need if you use a different color for each face? Answer: A pentagonal prism has 7 faces: 2 pentagonal faces on the top and bottom, and 5 rectangular faces connecting the sides of the two pentagons. If you want to use a different co...
Question: What is the number of faces of a pentagonal prism? Answer: A pentagonal prism has 7 faces. There are 2 pentagonal faces (the bases) and 5 rectangular faces (the sides) connecting the corresponding sides of the two pentagons.
Question: There are 1443 students in total in one school. The total number of girls is 141 fewer than the number of boys. How many boys are there in this school? Answer: Let's denote the number of boys as B and the number of girls as G. According to the information given, we have two equations: 1) The total number of...
Question: There are three numbers 10, 11, and 12. What is the product of the largest number and the next largest number? Answer: The largest number is 12 and the next largest number is 11. The product of these two numbers is: 12 * 11 = 132.
Question: A pond in the shape of a circle has a diameter of 14 meters (m). What is the radius of the pond in meters (m)? Answer: The radius of a circle is half of its diameter. Therefore, if the diameter of the pond is 14 meters, the radius would be: Radius = Diameter / 2 Radius = 14 m / 2 Radius = 7 m So, the radius...
Question: In the midterm, Yeji took four tests: Korean, Mathematics, Social Studies, and Science. If she took Korean language before math, and social studies later than math but before science, which subject did she take last? Answer: Yeji took Science last. The order based on the information given is: 1. Korean 2. M...
Question: There are three numbers 10, 11, and 12. What is the difference between the 2nd largest number and the 2nd smallest number? Answer: The three numbers are 10, 11, and 12. The second largest number is 11. The second smallest number is also 11. The difference between the second largest number and the second sma...
Question: A rectangle has a width of 81/4 centimeters (cm) and a height of 148/9 centimeters (cm). What is the area of this rectangle in square centimeters (cm2)? Answer: To find the area of a rectangle, you multiply the width by the height. Given: Width = 81/4 cm Height = 148/9 cm Area = Width × Height Area = (81/4)...
Question: Kyungsoo's group of students did the long jump. Kyungsoo jumped 2.3 meters (m), Younghee jumped 9/10 meters (m), Jinju jumped 1.8 meters (m), and Chanho jumped 2.5 meters (m). Who came as the second? Answer: To determine who came in second, we need to compare the jump distances of all the students. Kyungsoo...
Question: How many three-digit numbers have the sum of the ones, tens, and hundreds digits equal to 24? Answer: To find the three-digit numbers with the sum of the digits equal to 24, we need to consider that the smallest three-digit number is 100 and the largest is 999. The digits in each place (ones, tens, hundreds) ...
Question: You want to divide 24 by a certain number. However, you mistakenly added some number to 40, and the result was 52. What is the correct calculation result? Answer: First, let's find the number you mistakenly added to 40 to get 52. The equation for this is: 40 + x = 52 To find x, we subtract 40 from both si...
Question: How many three-digit numbers less than 300 satisfiy the following condition that the sum of each digit needs to be 7? Answer: To find the three-digit numbers less than 300 whose digits sum to 7, we need to consider numbers in the range of 100 to 299. Let's break down the possible combinations of three digits...
Question: When you add 30 to a number, you get 55. What is the value of the number subtracted by 23? Answer: Let's call the number you're looking for "x". According to the information given, when you add 30 to x, you get 55. This can be written as an equation: x + 30 = 55 To find the value of x, you need to subtract...
Question: A4461B is a six-digit number and is a multiple of 72. What is the value of A+B? Answer: To find the value of A+B, we need to determine the possible values of A and B that would make the six-digit number A4461B a multiple of 72. A multiple of 72 is also a multiple of both 8 and 9 (since 72 = 8 * 9), so the nu...
Question: Find the area of a square with a side of 6 centimeters (cm). Answer: The area of a square is calculated by squaring the length of one of its sides. Since all sides of a square are equal in length, if the side of the square is 6 cm, then the area is: Area = side × side Area = 6 cm × 6 cm Area = 36 cm² So, th...
Question: When a square tile is attached to a wall measuring 120 centimeters (cm) wide and 96 centimeters (cm) long, how many centimeters (cm) should one side of the tile be in length to attach the largest tile to the wall without any extra space? Answer: To find the largest square tile that can fit on the wall without...
Question: Yoojeong, Taehyung, and Seokjin have marbles. Taehyung has more marbles than Yoojeong. Seokjin has more marbles than Yoojeong. Taehyung has more marbles than Seokjin. Who has the most marbles? Answer: Taehyung has the most marbles.
Question: Minyoung had 17 notebooks. Among them, she gave some to Yujeong, and there were 8 left. How many notebooks did Minyoung give Yujeong? Answer: Minyoung had 17 notebooks originally and was left with 8 after giving some to Yujeong. To find out how many notebooks Minyoung gave to Yujeong, we subtract the number o...
Question: There are some sheets of paper, yellow on the front and green on the back on the floor. Students flipped 16 papers that look yellow so that they look green. If there are 64 more green papers than yellow papers, what was the difference before flipping? Answer: Let's denote the number of yellow papers as Y and ...
Question: There are 32 basketballs in the school. The number of basketballs is 5 more than the volleyballs and 3 less than the number of soccer balls. How many basketballs, volleyballs and soccer balls are there in total in the school? Answer: Let's denote the number of basketballs as B, the number of volleyballs as V,...
Question: Two boxes (a) and (b) have been delivered. Yoojung is going to take the smaller of the two boxes. If (b) box is smaller than (a) box, which box should Yoojung carry? Answer: Yoojung should carry box (b) since it is the smaller of the two boxes.
Question: Find the perimeter of the figure with 3 vertices, and the distance between the 2 vertices is the same as 7 cm (cm). Answer: If the figure has 3 vertices and the distance between each pair of vertices is the same, then the figure is an equilateral triangle. Each side of the equilateral triangle is 7 cm long. ...
Question: If 100 candies are divided into the same amount among Hyunji's classmates and there are no candies left, how many numbers are possible to become the number of Hyunji' classmates? (However, there are students other than Hyunji in Hyunji's class, and the number of students in the class does not exceed 50.) Answ...
Question: The number of marbles Jinwoo has is 2/3 of the number of marbles Seonghyeon has, and Cheolsu has 72 marbles. Find the number of marbles Jinwoo has when the sum of marbles Jinwoo and Cheolsu have is twice the number of marbles Seonghyeon has. Answer: Let's denote the number of marbles Seonghyeon has as S. Acco...
Question: Ji-sung drank 9/25 liters (L) of milk, and Young-pyo drank 0.41 liters (L). Who drank more milk? Answer: To compare the amounts of milk Ji-sung and Young-pyo drank, we need to have them in the same units. Ji-sung's consumption is given in fractions, and Young-pyo's is in decimals. We can convert Ji-sung's fra...
Question: Jungkook's car is 5th from the right and 4th from the left in a row in a parking lot. The number of cars parked in each row is the same, and the parking lot has 10 floors. If there are a total of 1600 cars in the parking lot, how many rows are there on each floor? Answer: To find out the number of rows on eac...
Question: What is 23 multiplied by 37 plus 16? Answer: 23 multiplied by 37 is 851. Adding 16 to that gives you 867.
Question: A number is greater than 35 and less than 70. When a number is divided by 6, the remainder is 3. When a number is divided by 8, the remainder is 1. Find a number. Answer: Let's denote the number we are looking for as \( N \). According to the given conditions, we have two congruences: 1. \( N \equiv 3 \mod ...
Question: Jimin drank 0.7 liters (L) of juice. Eunji drank 1/10 liters (L) less than Jimin. Yoongi drank 4/5 liters (L), and Yuna drank 0.2 liters (L) more than Jimin. Who drank the most juice? Answer: First, let's calculate how much juice Eunji drank. Eunji drank 1/10 liters less than Jimin, who drank 0.7 liters. Eu...
Question: The average score for Korean and Mathematics is 88. After taking the English test, the average score became 90 points. How much is the English score? Answer: Let's denote the Korean score as K, the Mathematics score as M, and the English score as E. According to the information given, the average score for K...
Question: The area of a rectangle is found by multiplying its width by its length. What is the value of A if the surface area of a rectangle is 120 square centimeters which is made by increasing the width by 3 centimeters (cm) and reducing the length by A centimeters (cm) of a square whose side length is 12 centimete...