MU-NLPC/Calc-aqua_rat huggingface dataset:
A certain bacteria colony doubles in size every day for 21 days, at which point it reaches the limit of its habitat and can no longer grow. If two bacteria colonies start growing simultaneously, how many days will it take them to reach the habitat’s limit?  Choose one.
A) 6.33 B) 7.5 C) 20 D) 15 E) 19

Solution: If there is one bacteria colony, then it will reach the limit of its habitat in 21 days.   If there are two bacteria colonies, then in order to reach the limit of habitat they would need to double one time less than in case with one colony. Thus colonies need to double 20 times.   Answer: C.   Similar questions to practice:   Hope it helps.
Answer: C
The number of new words that can be formed by rearranging the letters of the word 'RAM' is ? Choose the correct choice from the following:
A) 5
B) 10
C) 120
D) 6
E) 8

Solution: Number of words which can be formed   = 3! - 1 = 6- 1= 
6- 1 = 5
5.   5nswer:5
Answer: A
For each of her sales, a saleswoman receives a commission equal to 20 percent of the first $500 of the total amount of the sale, plus 50 percent of the total amount in excess of $500. If the total amount of one of her sales was $800, the saleswoman’s commission was approximately what percent of the total amount of the sale?	Choose the correct choice from the following.
A) 22% B) 24% C) 25% D) 27% E) 31%

Solution: Total sales =800   Comission = (20/100)*500+ (50/100)*300   =100 + 150= 
100 + 150 = 250
250   %Comission=(250/800)*100=31.3~ 31%   Answer is 31%
Answer: E
A man rows his boat 85 km downstream and 45 km upstream, taking 2 1/2 hours each time. Find the speed of the stream?
Choose the correct choice from the following answers:
A) 5 kmph
B) 6 kmph
C) 7 kmph
D) 8 kmph
E) 9 kmph

Solution: Speed downstream = d/t = 85/(2 1/2) = 34 kmph   Speed upstream = d/t = 45/(2 1/2) = 18 kmph   The speed of the stream = (34 - 18)/2= 
(34 - 18)/2 = 8
8 kmph   ANSWER:8 kmph
Answer: D
Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is?	Choose the correct choice from the following choices:	A) 7	B) 6	C) 8	D) 7/20	E) 1

Solution: n(S) = 20   n(Even no) = 10 = n(E)   n(Prime no) = 8 = n(P)   P(EᴜP) = 10/20 + 8/20 - 1/20 = 17/20   Answer: 7/20
Answer: D
A contractor is engaged for 30days on the condition thathe receives Rs.25 for each day he works &is fined Rs.7.50 for each day is absent. He gets Rs.555 in all. For how many days was he absent? Choose the correct answer
A) 8	B) 10	C) 15	D) 6	E) 19

Solution: 30 * 25= 
30 * 25 = 750
750   455   -----------   195   25 + 7.50= 
25 + 7.50 = 32.5
32.5   195/32.5= 
195/32.5 = 6
6   6
Answer: D
The value of log2 16 is:
A.
1
8
B.	4
C.	8
D.	16
Answer: Option B
Explanation:
Choose the correct choice from the following:
A) 2 B) 4 C) 6 D) 8 E) 12

Solution: Let log2 16 = n.   Then, 2n = 16 = 24 n = 4.   log2 16 = 4.   Answer: Option 4
Answer: B
Jerry travels 8 miles at an average speed of 40 miles per hour, stops for 11 minutes, and then travels another 20 miles at an average speed of 60 miles per hour. What is Jerry’s average speed, in miles per hour, for this trip?  Choose the correct choice
A) 37	B) 42.5	C) 44	D) 50	E) 52.5

Solution: Total Time taken by jerry = (8/40)*60 Minutes + 11 Minutes + (20/60)*60 Minutes = 45 Minutes   37verage Speed = Total Distance / Total Time = (8+20) miles / (45/60)Hours = 28*60 / 45 = 37 Miles per hour   37nswer: option 37
Answer: A
The volume of a rectangular box is 330 square inches. The length on one side of the top is 11
inches, and the height of the box is 3 inches. What is the area of the top of the box? (A drawing
may help you with this one.)  Options
A) 100
B) 130
C) 120
D) 110
E) 101

Solution: 3 x 11 = 33   V = 33 x missing measure   V is 330   330 ÷ 33 = 10 which is the missing   measure of the side of the box top   10 x 11 = 110 sq. ft. which is area   of the top of the box.   correct answer 110
Answer: D
In a room are five chairs to accommodate 3 people. One person to a chair. How many seating arrangements are possible?
Answers:
A) 45  B) 60  C) 72  D) 90  E) 120

Solution: The first person has 5 options i.e. 5 chairs to choose from   The second person has 4 options i.e. 4 chairs to choose from (first one has already taken a chair)   The third person has 3 options i.e. 3 chairs to choose from (two chairs are already gone)   Total seating arrangements 5*4*3= 
5*4*3 = 60
60   ANS:60
Answer: B
A sum fetched a total simple interest of Rs. 4016.25 at the rate of 9 p.c.p.a. in 5 years.What is the sum ?
Select the correct option:
A) Rs. 4462.50  B) Rs. 8032.50  C) Rs. 8900  D) Rs. 8925  E) None of these

Solution: Solution   Principal = Rs. (100x4016.25/9x5)= Rs.401625/25= Rs. 8925.   Answer Rs. 8925
Answer: D
The probability of pulling a black ball out of a glass jar is 1/W. The probability of pulling a black ball out of a glass jar and breaking the jar is 1/Y. What is the probability of breaking the jar?
Choose the correct option.
A) 1/(XY)  B) E/Y  C) Y/X  D) 1/(X+Y)  E) 1/(X-Y)

Solution: P of pulling a black ball out of a glass jar AND breaking the jar = 1/Y   P of pulling a black ball out of a glass jar is 1/W   Lets say P of breaking the jar = n   That means 1/W*n=1/Y   n= W/Y   E/Y is the answer
Answer: B
In the biology lab of "Jefferson" High School there are 0.036*10^5 germs, equally divided among 75000*10^(-3) Petri dishes. How many germs live happily in a single dish? Answers
A) 10	B) 20	C) 30	D) 40	E) 48

Solution: 0.036*10^5 can be written as 3600   75000*10^(-3) can be written as 75   Required= 3600/75= 
3600/75 = 48
48   ANSW48R:48
Answer: E
An old man distributed all the gold coins he had to his two sons into two different numbers such that the difference between the squares of the two numbers is 25 times the difference between the two numbers. How many coins did the old man have?
Choose the correct choice from the following answers:
A) 24
B) 26
C) 30
D) 25
E) 40

Solution: Let the number of coins one son got be x and the number of coins another got be y. Total = x + y.   x^2 - y^2 = 25(x - y) --> x + y = 25.   Answer: 25.
Answer: D
What is the greatest positive integer n such that 3^n is a factor of 36^100?  Options:	A) 100	B) 200	C) 300	D) 600	E) 900

Solution: Prime factorization out is the way to go here!   36 ^100   3^2 times 2^2 and both to the power of 100   [(3^2)*(2^2)]^100   giving you the beautifully simplistic answer of 3^200 and 2^200   Ans is 200   ANSWER:200
Answer: B
Mrs. Stark paid $6,000 for 100 shares of stock A and $4,000 for 100 shares of stock B. She later sold the same shares of both stocks, gaining 3/8 the amount she paid for stock B. If the prices she had paid for the stocks had been reversed and everything else remained the same, then the net result would have been: Choices
A) The same.  B) A loss 1 1/2 times as much.  C) A loss 2 times as much.  D) A loss 9 times as much  E) A gain 1 1/2 times as much

Solution: A = 6000; B = 4000; Profit = (3/8)*4000= 
(3/8)*4000 = 1_500
1500   After prices are reversed:   A= 4000; B = 6000; Profit = (3/8)*6000= 
(3/8)*6000 = 2_250
2250   2250= 3/2(1500) --> Gain of 3/2 times 1500   Answer: A gain 1 1/2 times as much
Answer: E
There are 300 seniors at Morse High School, and 50% of them have cars. Of the remaining grades (freshmen, sophomores, and juniors), only 10% of them have cars. If 25% of all the students at Morse have cars, how many students are in the three lower grades?  Choose the correct choice from the following options.
A) 500	B) 900	C) 1200	D) 1350	E) 1500

Solution: Let x be the number of students in the lower three grades.   0.1x + 150 = 0.25(x+300)   0.15x = 75   x = 500   The answer is 500.
Answer: A
Average of five consecutive even numbers is 35. Find the greatest number in these five numbers?	Choose the correct choice
A) 26	B) 29	C) 39	D) 42	E) 43

Solution: 39   Option '39'
Answer: C
A can do a piece of work in 10 days and B can do the same work in 12 days. A and B worked together for 2 days. How many more days are required to complete the remaining work if they work together?  Select:	A) 3 (5/19)	B) 3 (5/13)	C) 3 (5/11)	D) 3 (3/11)	E) 33(5/11)

Solution: A can do 1/10 of the work in a day.   B can do 1/12 of the work in a 1 day.   Both of them together can do (1/10 + 1/12) part of work in 1 day = (6 + 5)/60 = 11/60   They take 60/11 days to complete the work together.   Given that they already worked for 2 days.   The number of days required to complete remaining work => 60/11 - 2 = 38/11 = 3 (5/11) days.   Answer: 3 (5/11)
Answer: C
professor absentminded has a very peculiar problem that he cannot remember number larger than 15. however he tells his wife, i can remember any number up to 100 by remembering the three numbers obtained as remainder when the numbers is divided by 3,7 and 11 respectively. for example (2,3,6)is 17. professor remembers that he had(2,4,8)rupees in the purse, and he paid(2,5,4) rupees to the servant. how much money is left in the purse?	Choose one:
A) 45	B) 46	C) 47	D) 48	E) 49

Solution: find out the common term in those 3 series for (2,4,8)   3N+2=2,5,8,11,14......71,74   7N+4=4,11,18...67,74   11N+8=8,19,30......63,74   find out the common term in those 3 series for (2,5,4)   3N+2=2,5.....23,26   7N+5=5,12,19,26   11N+4=4,15,26   now  74-26= 
 74-26 = 48
48   ANSWER:48
Answer: D
Two trains, 130 and 110 metres long, while going in the same direction, the faster train takes one minute to pass the other completely. If they are moving in opposite direction, they pass each other completely in 3 seconds. Find the speed of trains.  Choose the correct choice:
A) 30 m/s, 40 m/s
B) 32 m/s, 48 m/s
C) 40 m/s, 44 m/s
D) 38 m/s, 42 m/s
E) None of these

Solution: Let speed of trains are S1 m/s and S2 m/s.   Then, s1 - s2 = 130+110/60=4 ....(i)   and s1 + s2 = 130+110/3=80....(ii)   on solving (i) and (ii), we get   S1 = 42 m/s , S2 = 38 m/s   Answer 38 m/s, 42 m/s
Answer: D
Mike earns $15 per hour and Phil earns $10per hour. Approximately how much less, as a percentage, does Phil earn than Mike per hour?	Choose the correct option:
A) 33.3%	B) 32.5%	C) 37%	D) 37.5%	E) 40%

Solution: What % less of 15is 10   let it be x % less ,then   =15(1-x/100)=10   1-x/100=10/15   x=100/3   x=33.3%   33.3%ns 33.3%
Answer: A
x, y, and z are all unique numbers. If x is chosen randomly from the set {9, 10, 11} and y and z are chosen randomly from the set {20, 21, 22, 23}, what is the probability that x and y are prime and z is not?
Choose one
A) 1/20 B) 1/12 C) 2/15 D) 3/10 E) 1/7

Solution: P(x is prime) = 1/3   P(y is prime) = 1/4   If y is prime, then z is not prime since y and z are unique.   Then the probability is 1/3*1/4 = 1/12   The answer is 1/12.
Answer: B
For dinner at a restaurant, there are x choices of appetizers, y + 1 main courses, and z choices of dessert. How many total possible choices are there if you choose 1 appetizer, 1 main course, and 1 dessert for your meal?  Select:  A) x + y + z + 1  B) xyz + xz  C) xy + z + 1  D) xyz + 1  E) xyz + 1/2

Solution: x appetizers,   y + 1 main courses,   z dessert   Required: 1 appetizer, 1 main course, and 1 dessert   Number of ways possible = xC1*(y+1)C1*zC1 {NC1 = N! / (N-1)!*1! = N}   Hence, number of ways = x(y+1)z = xyz + xz   Correct Option: xyz + xz
Answer: B
The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?	Choose the correct choice from the following options
A) 72 kmph	B) 75 kmph	C) 30 kmph	D) 80 kmph	E) 85 kmph

Solution: Explanation:   S = (90 + 60)/2= 
(90 + 60)/2 = 75
75 kmph   ANSWER IS 75 kmph
Answer: B
Mark and Ann together were allocated n boxes of cookies to sell for a club project. Mark sold 6 boxes less than n and Ann sold 2 boxes less than n. If Mark and Ann have each sold at least one box of cookies, but together they have sold less than n boxes, what is the value of n?
Choose the correct answer.
A) 1  B) 2  C) 3  D) 4  E) 5

Solution: if n =7   mark sold 1 box   and Ann sold 5 boxes   total 6 < 7   Answer:5
Answer: E
If Rs. 600 amounts to Rs. 683.20 in two years compounded annually, find the
rate of interest per annum.	Choose the correct choice from the following options
A) 3% p.a  B) 4% p.a  C) 6% p.a  D) 7% p.a  E) 8% p.a

Solution: Sol. Principal = Rs. 500; Amount = Rs. 583.20; Time = 2 years.   Let the rate be R% per annum.. 'Then,   [ 500 (1+(R/100)2 ] = 583.20 or [ 1+ (R/100)]2 = 5832/5000 = 11664/10000   [ 1+ (R/100)]2 = (108/100)2 or 1 + (R/100) = 108/100 or R = 8   So, rate = 8% p.a.   ANSW8% p.aR 8% p.a 8% p.a
Answer: E
A company has two types of machines, type R and type S. Operating at a constant rate, a machine of type R does a certain job in 36 hrs and a machine of type S does the same job in 18 hours. If the company used the same number of each type of machine to do the job in 4 hours, how many machines of type R were used?
Select the correct option: A) 3 B) 4 C) 6 D) 9 E) 12

Solution: Rate of machine R = 1/36   Rate of machine S = 1/18   Rate of R+S = 1/12   To finish the work in 4 hrs, the combined rate needs to be 1/4.   x * 1/12 = 1/4   x = 3   The answer is 3.
Answer: A
The value of a watch depreciates at the rate of 20% every year. It was purchased 4 years ago. If its present value is Rs. 2048, its purchase price was  Choose the correct choice from the following choices.
A) 3500 B) 4000 C) 4500 D) 5000 E) 5500

Solution: Explanation:   = Rs.5000   Answer: 5000
Answer: D
A coin is tossed six times. What is the probability that there is at the least one tail? Select the correct option
A) 63/64  B) 31/37  C) 31/18  D) 31/10  E) 31/19

Solution: Let P(T) be the probability of getting least one tail when the coin is tossed six times.   = There is not even a single tail.   i.e. all the outcomes are heads.   = 1/64 ; P(T) = 1 - 1/64 = 63/64   63/64nswer: 63/64
Answer: A
A Cistern is filled by pipe A in 9 hrs and the full Cistern can be leaked out by an exhaust pipe B in 12 hrs. If both the pipes are opened in what time the Cistern is full?
Choose the correct answer.
A) 28 hrs
B) 24 hrs
C) 36 hrs
D) 32 hrs
E) 34 hrs

Solution: Explanation:   Pipe A can fill 1/9 of the cistern in 1 hour.   Pipe B can empty 1/12 of the cistern in 1 hour   Both Pipe A and B together can effectively fill 1/9 − 1/12 = 1/36 of the cistern in 1 hour   i.e, the cistern will be full in 36 hrs.   Answer: Option 36 hrs
Answer: C
A jogger running at 9 km/hr along side a railway track is 240 m ahead of the engine of a 120 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger?  Choices
A) 33	B) 88	C) 36	D) 77	E) 21

Solution: Speed of train relative to jogger = 45 - 9= 
45 - 9 = 36
36 km/hr.= 36 * 5/18= 
36 * 5/18 = 10
10 m/sec.   Distance to be covered= 240 + 120= 
240 + 120 = 360
360 m.   Time taken= 360/10= 
360/10 = 36
36 sec.   Answer: 36
Answer: C
The Number 3A2105 is divisible by 3.What will be the value of A? Choose the correct choice from the following
A) 1 B) 2 C) 3 D) 5 E) 6

Solution: Divisibility of 3 is sum of the digits must be divisible by 3.   So,3+a+2+1+0+5=11+a   Then what gives the value will divisible by 3   So 1nswer is 1   Option 1
Answer: A
Hardy and Andy start a two-length swimming race at the same moment but from opposite ends of the pool. They swim in lanes at uniform speeds, but Hardy is faster than Andy. They 1st pass at a point 18.5m from the deep end and having completed one length each 1 is allowed to rest on the edge for exactly 40 sec. After setting off on the return length, the swimmers pass for the 2nd time just 10.5m from the shallow end. How long is the pool? Choose the correct choice from the following answers.
A) 35
B) 40
C) 45
D) 50
E) 55

Solution: let x=length of pool   at first meeting, combined distance=x   at second meeting, combined distance=3x   if andy swims 18.5 m of x, then he will swim  3*18.5= 
 3*18.5 = 55.5
55.5 m of 3x   andy's total distance to second meeting=x+10.5 m   x+10.5=55.5 m   x=45 m   45
Answer: C
The profit earned by selling an article for Rs. 832 is equal to the loss incurred when the same article is sold for Rs. 448. What should be the sale price for making 40% profit?	Choose the correct choice from the following answers:
A) 220
B) 230
C) 960
D) 780
E) 896

Solution: C.P. = Rs. x.   Then, 832 - x = x - 448   2x = 1280 => x = 640   Required S.P. = 140% of Rs. 640 = 140/100 * 640 = Rs. 896.   896
Answer: E
In what time will a train 140 m long cross an electric pole, it its speed be 144 km/hr?  Options: A) 3.5 sec B) 4.25 sec C) 5 sec D) 12.5 sec E) 6 sec

Solution: Speed = 144 * 5/18= 
144 * 5/18 = 40
40 m/sec   Time taken= 140/40= 
140/40 = 7/2 = around 3.5
3.5 sec.   3.5 secNSWER:3.5 sec
Answer: A
Four of the five parts numbered (a),(b),(c),(d) and (e) in the following sequence are exactly equal. Which part is not equal to the other four? The number of that part is the answer Choose the correct choice from the following answers
A) 120 × 12 – 22 × 20	B) 10% of 5000 + 2⁄5 of 1200	C) 80 × 40 – 20 × 110	D) 8640 ÷ 60 + 53.5 × 16	E) 5314 – 3029 – 1285

Solution: The other parts are equal to 1000.   Answer 10% of 5000 + 2⁄5 of 1200
Answer: B
Free notebooks were distributed in a class among all the students. Each student got notebooks which were one-eighth of the number of student. If number of student been half, then each child would have received 16 notebooks in total. Find the total number of books distributed among students? Choices.
A) 435  B) 440  C) 450  D) 460  E) 512

Solution: Let suppose total number of students in class are X.   Then from the question we can conclude it that,   X∗18X=X2∗16=>X=64Total notebooks,=18X2=(18∗64∗64)=512   512
Answer: E
A train travelled from station P to Q in 8 hours and came back from station Q to P is 6 hours. What would be the ratio of the speed of the train while traveling from station P to Q to that from station Q to P?
Choose the most appropriate option.
A) 3 : 9  B) 3 : 0  C) 3 : 3  D) 3 : 4  E) 3 : 1

Solution: Since S # 1/t   S1 : S2 = 1/t1 : 1/t2 = 1/8 : 1/6 = 3 : 4   Answer:3 : 4
Answer: D
In how many ways can 5 boys be allotted four different COTs such that none of the COTs are empty and all the 5 boys are accommodated?
Choose the correct answer.
A) 240  B) 260  C) 280  D) 290  E) 300

Solution: 4 boys can be selected from 5 boys in 5C4 ways = 5   4 boys can be arranged in 4 COTS in 4! ways   and since 1 boy has to share a COT with one of the 4 boys, therefore total ways = 2! = 2   Hence total number of ways in which allocation can be done = 5C4 * 4! * 2! = 5*2*4!   240   240
Answer: A
154 pencils are distributed to children with the same number. What can’t be the range including the number of children?
Answers:
A) 50~60 B) 10~20 C) 20~30 D) 1~10 E) 70~80

Solution: 154 candies are distributed to children with the same number. What can’t be the range including the number of children?   A. 1~10 B. 10~20 C. 20~30 D. 40~50 E. 70~80   -> In 154=1*154=2*77=7*22=11*14, you can come up with 4 cases. One is distributing 77 candies to 2 children each. Another is distributing 2 candies to 77 children each. Also, you can distribute 22 candies to 7 children. The other is distributing 7 candies to 22 children. Amongst these cases, what is not included is a. 50~60. Therefore, the answer is 50~60.
Answer: A
An employer has 5 applicants for a programming position and 4 applicants for a manager position. If the employer must hire 3 programmers and 2 managers, what is the total number of ways the employer can make the selection? Choose the correct choice from the following:
A) a) 1,490	B) b) 132	C) c) 60	D) d) 68	E) e) 23

Solution: 5C3 * 4C2 = 60. Answer c) 60.
Answer: C
In the recent, cyber security conference in London, out of 800 men, 900 women, 200 children present inside the building premises, 20% of the men, 30% of the women and 50% of the children were Indians. Find the percentage of people who were not Indian?	Choose the correct choice from the following choices:
A) 73.22
B) 72.11%
C) 79.22
D) 74.66
E) 88.22

Solution: Solution: Number of Indians men present there = 800*20/100= 
800*20/100 = 160
160   Indian women= 900*30/100= 
900*30/100 = 270
270   Indian children= 200*50/100= 
200*50/100 = 100
100.   Total member present in cyber security conference= 800+900+200= 
800+900+200 = 1_900
1900   Total Indian= 160+270+100= 
160+270+100 = 530
530   Hence, % of Indian present there= 530*100/1900 = 27.89%   % of people who were not Indian = 100-27.89= 
100-27.89 = 72.11
72.11%.   Answer 72.11%
Answer: B
Salesperson A's compensation for any week is $210 plus 6 percent of the portion of A's total sales above $1,000 for that week. Salesperson B's compensation for any week is 8 percent of B's total sales for that week. For what amount of total weekly sales would both salespeople earn the same compensation?	Answers:
A) $3500 B) $5500 C) $7500 D) $9500 E) $11,500

Solution: 210+0.06(x-1000) = 0.08x   0.02x = 150   x = $7,500   The answer is $7500.
Answer: C
If w and s are positive integers such that (2^w)(4^s) = 16, then 2w + s =
Choose the correct choice from the following choices.
A) 2	B) 3	C) 4	D) 5	E) 6

Solution: lets get the eq into simplest orm..   (2^w)(4^s) = 16..   (2^w)(2^2s) = 2^4..   or w+2s=4..   since w and s are positive integers, only w as 2 and s as 1 satisfy the Equation..   so 2w+s=2*2+1=5..   5
Answer: D
In the following sequence of alphabets, which letter would be at the middle of the fourth and sixteenth letters from the right ? A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Choose the correct choice from the following.
A) a)2^(1/3)	B) W	C) c)2^(1/2)	D) d)2^(3/2)	E) e)2^(1/4)

Solution: Ans is W
Answer: B
The length of the room is 6m and width is 6m. Find the cost of paving the floor by slabs at the rate of Rs.200 per sq meter?	Choose the correct choice from the following options:	A) 6200	B) 6300	C) 2700	D) 7200	E) 8000

Solution: l=6m w=6m   area of the floor = 6 x 6 = 36 sq m   cost of paving = 200 x 36= Rs. 7200   Answer: 7200
Answer: D
12^3+12^3+12^3=?
Choose the most appropriate option:
A) a)72^3
B) b) 72^4
C) c) 72^5
D) d) 72^6
E) e) 72^2

Solution: The correct answer is e) 72^2 72^2
Answer: E
What is the cost of leveling the field in the form of parallelogram at the rate of Rs.50/10 sq.metre, whose base & perpendicular distance from the other side being 54m & 24m respectively? Choose the correct choice from the following answers.
A) Rs. 5280	B) Rs. 5500	C) Rs. 6000	D) Rs. 6480	E) Rs. 7680

Solution: Area of the parallelogram = Length of the base * Perpendicular height   = 54 * 24= 
54 * 24 = 1_296
1296 m.   Total cost of levelling= Rs. 6480   Rs. 6480
Answer: D
A and B can do a work in 20days, B and C in 25days, C and A in 30days. If A,B and C work together , they will complete the work in?  Choose the correct answer
A) 10days
B) 12days
C) 16days
D) 20days
E) 25days

Solution: A+B 1day work = 1/20   B+16days 1day work +  1= 
+  1 = 1
1/20   B+16days 1day work= 1/25   16days+A 1day work = 1/30   Adding we get 2(A+B+16days)  +  1= 
 +  1 = 1
1/30   Adding we get 2(A+B+16days)= 1/20 + 1/25 + 1/30 = 37/300   A+B+16days 1 day work = 37/600   A,B,16days can finish the work in 600/37 days = 16days approximately   Answer is 16days
Answer: C
A trader bought a car at 20% discount on its original price. He sold it at a 40% increase on the price he bought it. What percent of profit did he make on the original price?  Choose the most appropriate option.
A) 16% B) 88% C) 12% D) 89% E) 56%

Solution: Original price = 100   12%P = 80   S = 80*(140/100)= 
80*(140/100) = 112
112   100 - 112= 12%   Answer: 12%
Answer: C
The speed of a boat in still water in 65 km/hr and the rate of current is 15 km/hr. The distance travelled downstream in 25 minutes is:	Choices.
A) 55.55 km
B) 44.44 km
C) 33.33 km
D) 22.22 km
E) 11.11 km

Solution: Explanation:   Speed downstream = (65 + 15)= 
(65 + 15) = 80
80 kmph   Time= 25 minutes = 25/60 hour = 5/12 hour   Distance travelled = Time × speed = (2/5)×80 = 33.33 km   Answer: Option 33.33 km
Answer: C
In each of the following questions, there are four options. The numbers, in these options, are alike in a certain manner. Only one number does not fit in. Choose the one which is different from the rest.  Choose the correct option:	A) 24	B) 90	C) 54	D) 36	E) 25

Solution: 24   remaing number are divisible by '9'   24NSWER:24
Answer: A