dataset
string
id
string
question
string
choices
list
rationale
string
answer
string
subject
string
aqua_rat
aqua_rat_11468
A train crosses a platform of 150 m in 15 sec, same train crosses another platform of length 250 m in 20 sec. then find the length of the train?
[ "150", "267", "266", "123" ]
null
A
null
aqua_rat
aqua_rat_11204
Townville has 100 residents, and 20 of them are females. If half of Townville’s male residents are smokers, and 1/2 of the female residents are smokers, which of the following represents the total number of Townville’s residents who are NOT smokers?
[ "45", "50", "55", "60" ]
null
B
null
aqua_rat
aqua_rat_73663
The average (arithmetic mean) of four numbers is 4x + 1. If one of the numbers is x, what is the average of the other three numbers?
[ "3x + 3", "5x + 4/3", "5x + 4", "15x + 12" ]
null
B
null
aqua_rat
aqua_rat_65965
The area of a square garden is Q square feet and the perimeter is P feet. If Q=P+32, what is the perimeter of the garden in feet?
[ "32", "40", "44", "48" ]
null
A
null
aqua_rat
aqua_rat_32006
one pipe can fill a tank in 15 hour.but because of hole in a tank,this tank fill in 20 hour.so in how much time this hole will empty the full tank?
[ "40", "50", "60", "70" ]
null
C
null
aqua_rat
aqua_rat_82067
The mean age of john,william,sam and katy is 25.the age of jhon is 22,age of sam is 30 and age of katy is 24.then tell me the age of william.
[ "24", "25", "26", "27" ]
null
A
null
aqua_rat
aqua_rat_69638
9. On level farmland, two runners leave at the same time from the intersection of two country roads. One runner jogs due north at a constant rate of 8 miles per hour while the second runner jogs due east at a constant rate that is 2 miles per hour slower than the first runner's rate. How far apart, to the nearest mile, will they be after 1/2 hour ?
[ "5", "8", "12", "14" ]
null
A
null
aqua_rat
aqua_rat_75742
A coin is tossed live times. What is the probability that there is at the least one tail?
[ "31/32", "31/30", "31/37", "31/31" ]
null
A
null
aqua_rat
aqua_rat_68448
The length of the bridge, which a train 145 metres long and travelling at 45 km/hr can cross in 30 seconds, is?
[ "178 m", "230 m", "187 m", "176 m" ]
null
B
null
aqua_rat
aqua_rat_20685
If A, B and C together can finish a piece of work in 4 days. A alone in 6 days and B in 18 days, then C alone can do it in?
[ "7", "8", "9", "36" ]
null
D
null
aqua_rat
aqua_rat_87020
A table is bought for Rs.940/- and sold at Rs.1040/- find the loss percentage
[ "10% Gain", "20% Loss", "20% Gain", "30% Gain" ]
null
A
null
aqua_rat
aqua_rat_37492
In the x-y plane, the area of the region bounded by the graph of |x+y| + |x-y| = 10 is
[ "625", "16", "20", "24" ]
null
A
null
aqua_rat
aqua_rat_15189
There are 50 people in a certain community who belong to the local golf club, tennis club or both clubs. If 1 as many people belong to the tennis club as belong to the golf club, what could be the number of people who belong to both clubs?
[ "1) 4", "3) 17", "4) 21", "5) 27" ]
null
A
null
aqua_rat
aqua_rat_12242
If a population of women in a town is 50% of men . What is the population of men as a % of population of women ?
[ "200%", "50%", "65%", "110%" ]
null
A
null
aqua_rat
aqua_rat_57965
If 40! × 40!/40^n is an integer, what is the largest possible value of n?
[ "10", "7", "3", "1" ]
null
A
null
aqua_rat
aqua_rat_20573
A 300 m long train crosses a platform in 42 sec while it crosses a signal pole in 18 sec. What is the length of the platform?
[ "350", "400", "276", "234" ]
null
B
null
aqua_rat
aqua_rat_59693
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?
[ "10 hrs", "15 hrs", "30 hrs", "25 hrs" ]
null
B
null
aqua_rat
aqua_rat_82620
A pharmaceutical company received $3 million in royalties on the first $25 million in sales of and then $9 million in royalties on the next $130 million in sales. By approximately what percentage did the ratio of royalties to sales decrease from the first $25 million in sales to the next $130 million in sales?
[ "15%", "35%", "42%", "56%" ]
null
C
null
aqua_rat
aqua_rat_71172
How much water must be added to 10 gallons of 10% brine solution to decrease the concentration to 4%?
[ "1.5—3 gal", "3—4.5 gal", "4.5—6 gal", "15+ gal" ]
null
D
null
aqua_rat
aqua_rat_74137
The least number which should be added to 2497 so that the sum is exactly divisible by 5,6,4 and 3 is :
[ "13", "23", "33", "43" ]
null
B
null
aqua_rat
aqua_rat_31834
If the product of the integers a, b, c, and d is 1,155 and if a > b > c > d > 1, then what is the value of a – d?
[ "8", "10", "11", "14" ]
null
A
null
aqua_rat
aqua_rat_93426
In a school of 300 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
[ "54", "70", "42", "31" ]
null
A
null
aqua_rat
aqua_rat_78671
A 250 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?
[ "240m", "250m", "260m", "270m" ]
null
B
null
aqua_rat
aqua_rat_63364
A pipe can empty 2/3rd of a cistern in 12 mins. In 8 mins, what part of the cistern will be empty?
[ "2/5", "4/9", "5/7", "4/11" ]
null
B
null
aqua_rat
aqua_rat_25506
Line J has a y-intercept of 9 and passes through point (a,b). What is the slope of Line J in terms of a and b?
[ "(a−b)/6", "(b-9)/a", "(6−b)/a", "(b−6)/a" ]
null
B
null
aqua_rat
aqua_rat_36801
A man sitting in a train which is travelling at 50 kmph observes that a goods train, travelling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed?
[ "62 kmph.", "72 kmph.", "80 kmph.", "None" ]
null
A
null
aqua_rat
aqua_rat_4338
In how many of ways can 4 balls be placed in 3 tins if any number of balls can be placed in any tin?
[ "5P4", "3^4", "4^5", "5^5" ]
null
B
null
aqua_rat
aqua_rat_78311
Every letter in the alphabet has a number value that is equal to its place in the alphabet. Thus, the letter A has a value of 1, the letter B has a value of 2, the letter C has a value of 3, etc... The number value of a word is obtained by adding up the value of the letters in the word and then multiplying that sum by the length of the word. What is the number value of the word "DOG"?
[ "75", "78", "81", "84" ]
null
B
null
aqua_rat
aqua_rat_54732
0, 1, 4, 15, 64, ____
[ "325", "125", "145", "none" ]
null
A
null
aqua_rat
aqua_rat_83239
In how many different number of ways 5 boys and 2 girls can sit on a bench?
[ "5040", "5060", "5080", "5000" ]
null
A
null
aqua_rat
aqua_rat_73422
A and B can do a work in 18 days, B and C in 30 days and C and A in 36 days. In how many days will the work be completed, if all three of them work together?
[ "360/13 days", "160/13 days", "260/13 days", "960/13 days" ]
null
A
null
aqua_rat
aqua_rat_22316
What is the square root of 400, divided by 2?
[ "36", "122", "6", "10" ]
null
D
null
aqua_rat
aqua_rat_71422
Working together, printer A and printer B would finish the task in 24 minutes. Printer A alone would finish the task in 60 minutes. How many pages does the task contain if printer B prints 4 pages a minute more than printer A ?
[ "480", "1000", "1200", "1500" ]
null
A
null
aqua_rat
aqua_rat_52969
If the price of a computer were reduced by 12 percent, which of the following could not be the final price of the computer? (Assume initial price to be integer in cents)
[ "$844.10", "$1,053.80", "$1,135.20", "$1,262.80" ]
null
A
null
aqua_rat
aqua_rat_91327
The two lines y = x and x = -4 intersect on the coordinate plane. If z represents the area of the figure formed by the intersecting lines and the x-axis, what is the side length W of a cube whose surface area is equal to 6z?
[ "W=8√2", "W=8", "W=2√2", "(√2)/3" ]
null
C
null
aqua_rat
aqua_rat_71173
The least number of five digits which is completely divisible by 39, is
[ "10101", "10016", "10023", "11011" ]
null
C
null
aqua_rat
aqua_rat_9330
What is the units digit of (6!*4! + 6!*5!)/12?
[ "0", "2", "1", "4" ]
null
A
null
aqua_rat
aqua_rat_20628
If integers c and b are distinct factors of 30, which of the following CANNOT be a factor of 30? I. cb + b^2 II. (c + b)^2 III. c + b
[ "II only", "III only", "I and II only", "I, II, and III" ]
null
A
null
aqua_rat
aqua_rat_56662
John is driving A Royal Enfield motor cycle at 66 km per hour when his rest duration is not considered. He takes small breaks each of 1 minute for every 10 minute of his drive. How much distance will the motor cycle cover in 90 minutes?
[ "89.1Km", "89.2Km", "89.3Km", "89.8Km" ]
null
A
null
aqua_rat
aqua_rat_13166
R is the set of positive even integers less than 20, and S is the set of the squares of the integers in R. How many elements does the intersection of R and S contain ?
[ "Two", "three", "Five", "Seven" ]
null
B
null
aqua_rat
aqua_rat_44660
A train passes a man standing on the platform. If the train is 180 meters long and its speed is 36 kmph, how much time it took in doing so?
[ "18 sec", "19 sec", "28 sec", "16 sec" ]
null
A
null
aqua_rat
aqua_rat_26055
At wipro gym class can be divided into 8 teams with an equal number of players on each team or into 12 teams with an equal number of players on each team. What is the lowest possible number of students in the class?
[ "24", "36", "48", "96" ]
null
A
null
aqua_rat
aqua_rat_46110
A river 3m deep and 36 m wide is flowing at the rate of 2 kmph the amount of water that runs into the sea per minute is?
[ "2678", "3600", "3400", "2500" ]
null
B
null
aqua_rat
aqua_rat_93238
On a ferry, there are 27 cars and 13 trucks. The cars have an average mass of 1100 kg and the trucks have an average mass of 3000 kg. What is the average mass of all 40 vehicles on the ferry?
[ "1616.5", "1717.5", "1818.5", "1919.5" ]
null
B
null
aqua_rat
aqua_rat_6615
A person purchases 90 shirts and sells 40 shirts at a gain of 10% and 50 shirts at a gain of 20%. If he sold all of them at a uniform profit of 15%, then he would have got $40 less. The cost price of each shirt is:
[ "30", "80", "40", "90" ]
null
B
null
aqua_rat
aqua_rat_86523
The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 30 metres?
[ "6", "12", "4", "13" ]
null
A
null
aqua_rat
aqua_rat_49039
What comes next in the series? 1 2 6 24 120 720 ___
[ "2020", "5040", "4028", "3920" ]
null
B
null
aqua_rat
aqua_rat_94468
In how many different ways can 3 identical orange hats and 3 identical purple hats be distributed among 6 children such that each child receives a hat?
[ "20", "997952", "6169", "241" ]
null
A
null
aqua_rat
aqua_rat_50458
The length of a rectangle is two - fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 625 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 8 units?
[ "158 sq.units", "187 sq.units", "80 sq.units", "815 sq.units" ]
null
C
null
aqua_rat
aqua_rat_33265
The set S has 36 different subsets each of which contains exactly two elements. How many subsets of S could contain exactly four elements each?
[ "126", "110", "100", "118" ]
null
A
null
aqua_rat
aqua_rat_95346
Complete the sequence: A D I P ?
[ "C", "S", "D", "Y" ]
null
D
null
aqua_rat
aqua_rat_64744
In a City, 35% of the population is composed of migrants, 20% of whom are from rural areas. Of the local population, 48% is female while this figure for rural and urban migrants is 30% and 40% respectively. If the total population of the city is 728400, what is its female population ?
[ "324138", "378908", "277880", "379010" ]
null
A
null
aqua_rat
aqua_rat_10065
One hour after Yolanda started walking from X to Y, a distance of 80 miles, Bob started walking along the same road from Y to X. If Yolandaâs walking rate was 8 miles per hour and Bobâs was 9 miles per hour, how many miles had Bob walked when they met?
[ "38.07", "42", "39", "40.07" ]
null
A
null
aqua_rat
aqua_rat_24955
Ram professes to sell his goods at the cost price but he made use of 900 grms instead of a kg, what is the gain percent?
[ "11 2/9%", "11 1/9%", "10%", "9%" ]
null
B
null
aqua_rat
aqua_rat_15836
In a division, when a student mistook the divisor as 12 instead of 21 and obtained 35 as quotient the remainder is 0 . What is the correct quotient?
[ "18", "20", "24", "29" ]
null
B
null
aqua_rat
aqua_rat_45944
Mrs. Napier has 26 stickers to give to 4 students for a reward. How many stickers will each student get? Will there be any stickers left over?
[ "6-5", "3-6", "2-3", "2-8" ]
null
A
null
aqua_rat
aqua_rat_49820
Andrew travelling to 7 cities. Gasoline prices varied from city to city. What is the median gasoline price?
[ "$1.84", "$1.92", "$2.13", "$2.15" ]
null
A
null
aqua_rat
aqua_rat_72574
A sum of money at simple interest amounts to Rs. 855 in 3 years and to Rs. 854 in 4 years. The sum is:
[ "s. 690", "s. 738", "s. 700", "s. 718" ]
null
B
null
aqua_rat
aqua_rat_19772
In a recent election, Geoff received 1 percent of the 6,000 votes cast. To win the election, a candidate needed to receive more than x% of the vote. If Geoff needed exactly 3,571 more votes to win the election, what is the value of x ?
[ "54", "56", "60", "60.5" ]
null
D
null
aqua_rat
aqua_rat_61314
How many 9 digit numbers are possible by using the digits 1,2,3,4,5 which are divisible by 4 if the repetition is allowed?
[ "57", "55", "59", "58" ]
null
D
null
aqua_rat
aqua_rat_68141
A particular library has 75 books in a special collection, all of which were in the library at the beginning of the month. These book are occasionally loaned out through an inter-library program. If, by the end of the month, 80 percent of books that were loaned out are returned and there are 67 books in the special collection at that time, how many books of the special collection were loaned out during that month?
[ "30", "35", "40", "55" ]
null
C
null
aqua_rat
aqua_rat_45295
The positive value of x that satisfies the equation (1 + 2x)^3 = (1 + 3x)^4 is between Bunuel, can you please explain this one?
[ "0.5 and 1", "1 and 1.5", "1.5 and 2", "2 and 2.5" ]
null
A
null
aqua_rat
aqua_rat_60682
A 300m race is held between two players running 3m/s and 5m/s in swimming pool of 50m long. how many times the two player meet in opposite direction till the faster one completes the race.
[ "4", "5", "6", "7" ]
null
A
null
aqua_rat
aqua_rat_61666
A wheel has a diameter of x inches and a second wheel has a diameter of y inches. The first wheel covers a distance of d feet in 1000 revolutions. How many revolutions does the second wheel make in covering d feet?
[ "1000x/y", "1000x - y", "1000y/x", "1000y - x" ]
null
A
null
aqua_rat
aqua_rat_94680
If two sides of a triangle are 3 and 12, respectively, which of the following could NOT be the area of this triangle?
[ "6", "17", "29", "16" ]
null
C
null
aqua_rat
aqua_rat_94228
If 3 tic equals 6 tacs and 2 tacs equal 7 tocs, what is the ratio of one tic to one toc?
[ "7/1", "5/6", "3/10", "1/15" ]
null
A
null
aqua_rat
aqua_rat_10794
At what price must an Book costing $47.50 be marked in order that after deducting 8% from the list price. It may be sold at a profit of 25% on the cost price?
[ "64.5", "62.5", "82.5", "60.5" ]
null
A
null
aqua_rat
aqua_rat_95344
An article is sold at a profit of 14%. If both the cost price and selling price are Rs 132 less, the profit would be 12% more. Find the cost price.
[ "Rs268", "Rs266", "Rs286", "Rs296" ]
null
B
null
aqua_rat
aqua_rat_86049
At a certain company, each employee has a salary grade s that is at least 1 and at most 5. Each employee receives an hourly wage p, in dollars, determined by the formula p = 9.50 + 0.25(s – 1). An employee with a salary grade of 4 receives how many more dollars per hour than an employee with a salary grade of 1?
[ "$0.75", "$1.25", "$1.50", "$1.75" ]
null
A
null
aqua_rat
aqua_rat_72342
A bag contains 3 red, 4 blue and 4 green balls. If 2 ballsare picked at random, what is the probability that both are red?
[ "2/21", "3/55", "3/29", "4/27" ]
null
B
null
aqua_rat
aqua_rat_87968
Three beakers namely A, B and C each contain 100 ml of spirit in water solution. The ratio of spirit to water in the beakers A, B and C is 1 : 3, 1 : 4 and 2 : 3 respectively. 40 ml of solution is transferred from beaker A to beaker C and than 28 ml of solution is transferred from beaker C to beaker B. Find the final ratio of spirit in the beakers A, B and C.
[ "3 : 6 : 8", "15 : 28 : 42", "25 : 28 : 42", "None of these" ]
null
A
null
aqua_rat
aqua_rat_64290
What is the units digit of (493) (913) (381) (756) (29)
[ "1", "4", "3", "6" ]
null
C
null
aqua_rat
aqua_rat_24184
A number x is multiplied by 7, and this product is then divided by 3. If the positive square root of the result of these two operations equals x, what is the value of x if x≠0 ?
[ "7/3", "5/3", "3/5", "9/25" ]
null
A
null
aqua_rat
aqua_rat_94991
A, B and C can do a work in 90, 30 and 45 days respectively. If they work together, in how many days will they complete the work?
[ "15", "77", "88", "11" ]
null
A
null
aqua_rat
aqua_rat_47404
A dishonest shopkeeper professes to sell pulses at the cost price, but he uses a false weight of 950gm. for a kg. His gain is …%.
[ "5.3 %", "4.3%", "8.3%", "8.0%" ]
null
A
null
aqua_rat
aqua_rat_93591
If 89/99 = 0.898, what is the 83rd digit to the right of the decimal point of the fraction?
[ "2", "8", "7", "9" ]
null
B
null
aqua_rat
aqua_rat_94238
Tough and Tricky questions: Ratios 1/5 of a certain class left on a field trip. 1/3 of the students who stayed behind did not want to go on the field trip (all the others did want to go). When another vehicle was located, 1/2 of the students who did want to go on the field trip but had been left behind were able to join. What fraction of the class ended up going on the field trip?
[ "2/3", "7/15", "23/30", "4/5" ]
null
B
null
aqua_rat
aqua_rat_81983
Mr Sharad started a business investing 50000. Four months later Mr Praveen joined the business by investing 90000. If the profit in the business at the end of the year was 22000 how much amount would Mr Praveen have received as the profit?
[ "14000", "12000", "11000", "None of these" ]
null
B
null
aqua_rat
aqua_rat_61141
The average of first 16 even numbers is?
[ "18", "16", "11", "17" ]
null
D
null
aqua_rat
aqua_rat_85132
What least number must be subtracted from 42398 so that remaining no.is divisible by 15
[ "5", "6", "8", "9" ]
null
C
null
aqua_rat
aqua_rat_5338
A corporation seven times its annual bonus to 5 of its employees. What percent of the employees’ new bonus is the increase?
[ "85.71%", "3.12%", "4.78%", "3.69%" ]
null
A
null
aqua_rat
aqua_rat_52670
What least no. must be subtracted from 5026 so that remaining no.is divisible by 5?
[ "4", "5", "6", "1" ]
null
D
null
aqua_rat
aqua_rat_25941
In what time will a train 100 m long cross an electric pole, it its speed be 90 km/hr?
[ "2.9 sec", "3.5 sec", "4 sec", "2.4 sec" ]
null
C
null
aqua_rat
aqua_rat_76061
If 40 honey bees make 40 grams of honey in 40 days, then 1 honey bee will make 1 gram of honey in how many days?
[ "3.5", "40", "49", "30" ]
null
B
null
aqua_rat
aqua_rat_44609
if 3rd december 1999 is sunday what day is 3rd january 2000
[ "wednesday", "friday", "saturday", "sunday" ]
null
A
null
aqua_rat
aqua_rat_80690
If taxi fares were $1.00 for the first 1/5 mile and $0.20 for each 1/5 mile there after, then the taxi fare for a 3-mile ride was
[ "$2.40", "$3.80", "$4.20", "$2.80" ]
null
B
null
aqua_rat
aqua_rat_29969
How many 4-letter word with or without meaning can be formed out of the letters of the word 'LOGARITHMS' if repetition of letters is not allowed
[ "100", "5040", "5000", "500" ]
null
B
null
aqua_rat
aqua_rat_39315
In a village there are 4 programs organised for the festival. The festival occurs for 2 days. In how many ways that the 2 programs can be divided for 2 days?
[ "10", "6", "5", "2" ]
null
B
null
aqua_rat
aqua_rat_78838
Jack and Jill went up and down a hill. They started from the bottom and Jack met jill again 20 miles from the top while returning. Jack completed the race 1 min a head of jill. if the hill is 440 mts high and their speed while down journey is 1.5 times the up journey. how long it took for the Jack to complete the race ?
[ "11.6 min", "12.6 min", "13.6 min", "14.6 min" ]
null
B
null
aqua_rat
aqua_rat_74915
A group of 10 people plan to rent a van and agree to share equally the total cost of the rental, which is E dollars. If n of the people decide not to participate at the last minute, by how many dollars will each remaining person's share of the total cost increase?
[ "(12 - n)/E", "nE / [10(10-n)]", "E/[12(12-n)]", "(12-n)E/(12n)" ]
null
B
null
aqua_rat
aqua_rat_36928
Of 70 players on a football team, 37 are throwers. The rest of the team is divided so one third are left- handed and the rest are right handed. Assuming that all throwers are right handed, how many right- handed players are there total?
[ "59", "63", "71", "92" ]
null
A
null
aqua_rat
aqua_rat_72401
Statement: "If you trouble me, I will slap you." Assumptions: 1) With the warning, the child may stop troubling her. 2) All children are basically naughty.
[ "Only assumption I is implicit", "Either I or II is implicit", "Neither I nor II is implicit", "Both I and II are implicit" ]
null
A
null
aqua_rat
aqua_rat_70336
If x and g are integers and 2x–g= 11, then 4x+ g CANNOT be
[ "1", "13", "17", "551" ]
null
C
null
aqua_rat
aqua_rat_30006
The simple interest on a certain sum of money for 2 years at 10% per annum is half the compound interest on $100 for 2 years at 5% per annum. The sum placed on simple interest is ?
[ "$602.5", "$710.6", "$745", "$790.3" ]
null
A
null
aqua_rat
aqua_rat_47364
If (x + 1)(x + 3) = x^2 + x, what is a possible value of x?
[ "3", "-1/3", "-3", "-1" ]
null
D
null
aqua_rat
aqua_rat_31348
A and B complete a work in 8 days. A alone can do it in 12 days. If both together can do the work in how many days?
[ "3.99 days", "2.99 days", "4.8 days", "2.44 days" ]
null
C
null
aqua_rat
aqua_rat_76134
In how many ways 7 boys and 7 girls can be seated in a row so that boys and girls are alternate?
[ "50803200", "50003280", "50703200", "50603200" ]
null
A
null
aqua_rat
aqua_rat_85486
In a race of length L metres, Johnson beats Lewis by M metres and Greene by N metres, By how many metres does Lewis beat Greene in the same race ? (M<N)
[ "M+", "L-N", "M-N", "L(N-M)/ L-M" ]
null
D
null
aqua_rat
aqua_rat_28817
A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km and 11 km per hour respectively. What is the distance between them after 6 minutes?
[ "100 m", "190 m", "200 m", "220 m" ]
null
A
null
aqua_rat
aqua_rat_8338
It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ?
[ "400 m", "100 m", "89m", "56m" ]
null
A
null