RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: Ramu was facing East. He walked 4 km forward and then after turning to his right walked 6
km. Again he turned to his right and walked 7 km. After this he turned back. Which direction
was he facing at the time?
A.East
B.North
C.South
D.West
Answer: A.East
Explanation: First he is in east direction...n then he moved forward 4km, and then he turned to right means he is now in south direction n he moved forwrd 6km towards south n again he turned right ... Here now he is in west direction...in question they mention what his position facing towards when he turned back.... He is now in east
ANSWER:A
Question: A person bought an article and sold it at a loss of 10%. If he had bought it for 20% less and sold it for Rs.75 less, he could have gained 25%. What is the cost price?
A.Rs.250
B.Rs.229
C.Rs.220
D.Rs.127
Answer: A.Rs.250
Explanation: CP1 = 100 SP1 = 90
CP2 = 80 SP2 = 80 * (140/100) = 112
22 ----- 100
55 ----- ? => Rs.250
Answer: A
Question: If in a box of dimensions 6 m * 5 m * 4 m smaller boxes of dimensions 60 cm * 50 cm * 40 cm are kept in it, then what will be the maximum number of the small boxes that can be kept in it?
A.3388
B.1000
C.2799
D.2787
Answer: B.1000
Explanation: 6 * 5 * 4 = 60/100 * 50/100 * 40/100 * x
1 = 1/10 * 1/10 * 1/10 * x => x = 1000
Answer: B
Question: A company has 15 managers and 75 associates. The 15 managers have an average salary of $180,000. The 75 associates have an average salary of $30,000. What is the average salary for the company?
A.$35,000
B.$45,000
C.$55,000
D.$65,000
Answer: C.$55,000
Explanation: Another method is to get ratios
Say 30000=a and
We know the # of people are in 1:5 ratio
Average=(6a*1+a*5)/6= 11a/6=55000
Answer is C. $55,000
Question: Find the highest value of 'a' so that 36500a is divisible by 8.
A.9
B.8
C.0
D.2
Answer: B.8
Explanation: Explanation:
Given, number is divisible by 8 only if 'a' is divisible by 8 or is 0.
.: Highest value of a is '8'.
Answer: Option B
Question: A certain number of men can do a work in 60days. If there were 8 men less it could be finished in 10days more. How many men are there?
A.56
B.42
C.60
D.45
Answer: A.56
Explanation: The original number of men = 8(60+10)/10 = 56men
Answer is A
Question: If a and b are odd integers, which of the following is an even integer?
A.2(a-b)+ab
B.2(a-b)+a
C.2(a-b)+b
D.2(a-b)+ab+a
Answer: D.2(a-b)+ab+a
Explanation: 2(a-b)+ab+a=even+odd+odd=even
The answer is D.
Question: Two taps can separately fill a cistern 8 minutes and 12 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. The waste pipe can empty the full cistern in?
A.7
B.8
C.6.5
D.9
Answer: C.6.5
Explanation: 1/8 + 1/12 - 1/x = 1/18
x = 72/11 = 6.5
Answer: C
Question: Given that E and F are events such that P(E) = 0.16, P(F) = 0.4 and P(E n F) = 0.4,
find P (E|F) and P(F|E)
A.1/4
B.1/7
C.1/9
D.1/11
Answer: A.1/4
Explanation: Here, E and F are events
P(E|F) = P(EnF)/P(F) = 0.4/0.4 = 1
P(F|E) = P(EnF)/P(E) = 0.4/0.16 = 1/4.
A)
Question: The owner of a furniture shop charges his customer 24% more than the cost price. If a customer paid Rs. 8339 for a computer table, then what was the cost price of the computer table?
A.6727
B.6887
C.6728
D.6725
Answer: D.6725
Explanation: :
CP = SP * (100/(100 + profit%))
= 8339(100/124) = Rs. 6725.
Answer: D
Question: An investment W gained an interest payment of $250 each month when the annual interest rate was 8%, how much more should we invest annually if we want to gain 12% more per month with a new annual interest rate of 7.5% ?
A.$9,360
B.$9,100
C.$8,250
D.$7,300
Answer: D.$7,300
Explanation: Answer is D : 7,300
An investment W gained an interest payment of $250 each month when the annual interest rate was 8%,Interest per annum with 8% interest rate is = 250* 12 = Principal * Interest Rate(8/100)
This gives Principal as 37,500$
For an revised interest of 12% more and new interest rate of 7.5% , ie. 250* 12 * 1.12 = Principal * Interest Rate (7.5/100)
This gives the new Principal as 44,800.
The question is how much more should we invest, so 44,800 - 37,500 = 7,300.D
Question: A car owner buys petrol at Rs 7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year ?
A.8.98
B.7.98
C.6.98
D.4.98
Answer: B.7.98
Explanation: Explanation:
Total quantity of petrol consumed in 3 years = liters
= liters
= liters
Total amount spent = Rs. (3 x 4000) = Rs. 12000.
Average cost = Rs. = Rs. 7.98.
Answer: B
Question: A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was
A.5 days
B.6 days
C.7 days
D.9 days
Answer: D.9 days
Explanation: does the job in 40 days = 1/40
A & B together completes the job = ?
After A leaves, B completes the remaining job in 23 days.
i.e B's part of job in 23days = 23/40
Remaining part 17/40 is done by A & B together in x no.of days.
i.e (x/45) + (x/40) = 17/40
=> x = 9 days
ANSWER:D
Question: The ratio of the radius of two circles is 1: 3, and then the ratio of their areas is?
A.1: 5
B.1: 0
C.1: 9
D.1: 4
Answer: C.1: 9
Explanation: r1: r2 = 1: 3
Πr12: Πr22
r12: r22 = 1: 9
Answer: C
Question: Jose is uploading a file to the internet for a college project. The file weighs 160 megabytes. If Jose's internet speed for uploading tops 8 megabytes per minute, how long will it take until the upload is completed?
A.1 hour
B.45 minutes
C.20 minutes
D.5 minutes
Answer: C.20 minutes
Explanation: Answer is (C). Jose calculates that if the files weighs 160 megabytes, and his internet uploads at 8 megabytes per minute, it would take 20 minutes to upload as 160 divided by 8 megabytes per minute equals 20.
Question: If c is 14% of a and 40% of b, what percent of a is b?
A. 2.5%
B. 15%
C. 25%
D. 35%
Answer: D. 35%
Explanation: Answer = D
14a/100 = 40b/100
b = 14a/40 = 35a/100 = 35%
Question: Using all the letters of the word "TEN", how many words can be formed, which begin with N and end with A?
A.1
B.6
C.8
D.9
Answer: A.1
Explanation: There are five letters in the given word.
Consider 3 blanks ....
The first blank and last blank must be filled with T and N all the remaining three blanks can be filled with the remaining 1 letters in 1! ways.
The number of words = 1! = 1.
Answer: A
Question: What no. should be subtracted from x^3+4x^2−7x+12x^3+4x^2−7x+12, if it is to be perfectly divisible by x+3x+3?
A.40
B.42
C.45
D.46
Answer: B.42
Explanation: According to remainder theorem when dfracf(x)x+adfracf(x)x+a, then the remainder is f(−a)f(−a).
In this case, as x+3x+3 divides x3+4x2−7x+12–kx3+4x2−7x+12–k perfectly (kk being the number to be subtracted), the remainder is 0 when the value of xx is substituted by -3.
i.e., (−3)3+4(−3)2−7(−3)+12−k=0(−3)3+4(−3)2−7(−3)+12−k=0
or −27+36+21+12=k−27+36+21+12=k
or k=k= 42
B
Question: A city had 800 migrants in the year 2000. Since then, The number of migrants in a countrythe city has doubled every 2 years. If there were 800 migrants in the country in the year 2000, What was the increase in the population of migrants during the period from 2006 to 2008?
A.2800
B.4400
C.5400
D.6400
Answer: D.6400
Explanation: The population will increase in the following order:
2000: 800
2002: 1600
2004: 3200
2006: 6400
2008: 12800
Difference between 2006 and 2008 = 6400
Option D
Question: On a map, 3 centimeters represents 33 kilometers. Two cities 209 kilometers apart would be separated on the map by how many centimeters?
A.19
B.7
C.13
D.110
Answer: A.19
Explanation: 1 centimeter represents 11 kilometers ( 33/3 )
X=209/11= 19
Answer: A
Question: The average of 25 result is 18.The average of 1st 12 of them is 14 & that of last 12 is 17.Find the 13th result.
A.57
B.48
C.36
D.78
Answer: D.78
Explanation: Clearly 13th result=(sum of 25 results)-(sum of 24 results)
=(18*25)-(14*12)+(17*12)
=450-(168+204)
=450-372
=78.
Ans: D
Question: A 20% stock yielding 10% is quoted at :
A.83.33
B.110
C.200
D.120
Answer: C.200
Explanation: Solution
To earn Rs. 10, money invested = Rs. 100.
To earn Rs. 20, money invested = Rs.(100/10X20) = Rs. 200.
âˆ´ Market value of Rs. 100 stock =Rs. 200
Answer C
Question: The rate of inflation was 1000%. Then what will be the cost of an article, which costs 6 units of currency now, 2 years from now?
A.666
B.626
C.547
D.726
Answer: D.726
Explanation: Explanation :
Let x be initial cost .
1000 % increase => x + (1000/100)x = 11x.
1st yr = 6 * 11 = 66
2nd year = 66 * 11 = 726.
Answer : D
Question: What is the perimeter of a regular polygon with sides of length 15 cm and internal angles measuring 130° each?
A.108 cm
B.118 cm
C.120 cm
D.132 cm
Answer: A.108 cm
Explanation: Sum of all interior angles is given by:
180(n-2) = n is number of sides
180(n-2) = 130*n
from here
n = 7.2
So perimeter becomes 15*7.2= 108
Answer: A
Question: 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, (...)
A.53
B.67
C.48
D.59
Answer: B.67
Explanation: Explanation :
All are prime numbers in their order, starting from 23
Hence, next number is 67
Answer : B
Question: Mike weighs twice as much as Mary. Mike's weight is 150% of Michelle's weight. Alan weighs 20% more than Charlie. Charlie weighs 160% of Mary's weight. Which of these 5 people weighs the highest?
A.Mary
B.Mike
C.Michelle
D.Alan
Answer: B.Mike
Explanation: Mary < Michelle < Mike
Charlie < Alan
Let x be Mary's weight.
Mike's weight is 2x and Alan's weight is 1.2*1.6x = 1.92x.
The answer is B.
Question: The diameter of the driving wheel of a bus in 140 cm. How many revolutions per minute must the wheel make in order to keep a speed of 11 kmph?
A.21.23
B.52.85
C.23.26
D.41.67
Answer: D.41.67
Explanation: distance covered in 1 min=(66*1000)/60=183.33cm
circumference of the wheel=(2*(22/7)*.70)=4.4m
no of revolution per min=183.33/4.4=41.67
ANSWER:D
Question: Anil invested a sum of money at a certain rate of simple interest for a period of five years. Had he invested the sum for a period of nine years for the same rate, the total intrest earned by him would have been sixty percent more than the earlier interest amount. Find the rate of interest p.a.
A.6%
B.9%
C.12.5%
D.Cannot be determined
Answer: D.Cannot be determined
Explanation: Let the sum be Rs.P. Let the rate of interest be R% p.a.
(P)(9)(R)/100 = [1 + 6/100][ (P)(5)(R) /100] = 1.6{5PR/100]
9PR/100 = 9PR/100 which is anyway true.
R cannot be found.
ANSWER:D
Question: In an office, 60 percent of the workers have at least 5 years of service, and a total of 16 workers have at least 10 years of service. If 90 percent of the workers have fewer than 10 years of service, how many of the workers have at least 5 but fewer than 10 years of service?
A. 96
B. 64
C. 50
D. 144
Answer: A. 96
Explanation: (10/100)Workers = 16 = > number of workers = 160
(60/100)*Workers = x+16 = > x = 96
Answer A
Question: The list price of a watch is 160. A retailer bought the same watch 122.40. He got two successive discounts one at 10% and the other at a rate which was not legible. What is the second discount rate?
A.12%
B.14%
C.15%
D.18%
Answer: C.15%
Explanation: Retailer price = list price (1−d1/100)(1−d2/100)
⇒ 122.40 = 160(1−10/100)(1−d2/100)
⇒ 1−d2/100=122.40×100/160×90=0.85
⇒ d2 = (1 - 0.85) × 100 = 15%
Answer C
Question: If the price of an item is decreased by 20% and then increased by 20%, the net effect on the price of the item is
A.A decrease of 4%
B.No change
C.A decrease of 1%
D.A increase of 1%
Answer: A.A decrease of 4%
Explanation: initially assume 100 rupees
20% discount in 100 gives price of 80 rupees
then 20% raise in 80 is only 16 rupees.
therefore total price =96 rupees.
hence 4% is the loss
ANSWER:A
Question: If log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is:
A.0.6532
B.0.7727
C.0.3266
D.0.3796
Answer: A.0.6532
Explanation: log 3 + log 3 = log (3*3) ->log 9 = 0.4771 + 0.4771 = 0.9542
now
log 9 - log 2 = log (9/2) =log 4.5
-> log 4.5 = 0.9542 - 0.3010 = 0.6532
ANSWER:A
Question: A thief steels a car at 6a.m. and drives it at 60kmph. The theft is discovered at 7a.m. and the owner sets off in another car at 90 kmph. When will he overtake the thief?
A.9a.m.
B.9.30a.m.
C.10a.m.
D.11.45a.m.
Answer: A.9a.m.
Explanation: Suppose the thief overtakes x hours after 6a.m.
Distance covered by the thief in x hrs = distance covered by the owner in (x-1 hours)
60x = 90(x-1)
30x = 90
x = 3 hrs
Thief is overtaken at 9a.m.
Answer is A
Question: Find the C.I. on a sum of Rs.1800 for 6 months at 20% per annum, interest being compounded quarterly?
A.792
B.892
C.8920
D.802
Answer: C.8920
Explanation: C.I.= 1800(21/20)^2-1800
= 792
Answer: C
Question: For what value of x, is |x – 2| + |x + 5| + |x| = 17?
A. 0
B. 3
C. -3
D. 5
Answer: D. 5
Explanation: For what value of x, is |x – 2| + |x + 5| + |x| = 17?
It's easiest just to plug in answer choices:
(D): 5
|x – 2| + |x + 5| + |x| = 17?
|5 - 3| + |5 + 5| + |5| = 17?
|2| + |10| + |5| = 17
(D)
Question: There are three guys who have equal number of bullets. All of them shoot 4 bullets. The remaining bullets are equal to the total number of bullets remaining is equal to the bullets each had after division. What was the original number of bullets each one had?
A.18
B.19
C.20
D.21
Answer: A.18
Explanation: let initially each was having x bullets
they shot 4 bullets
so 3x-12=x
x=6
so each was having 6 bullets.
total was 18.
ANSWER:A
Question: A car was driving at 50 Km/h for 30 minutes, and then at 40 Km/h for another 30 minutes. What was its average speed?
A.80.
B.75.
C.70.
D.65.
Answer: A.80.
Explanation: driving at 50 Km/h for 30 minutes ,distance covered = 50*1/2=25 km
driving at 40 km/h for 30 minutes ,distance covered = 40*1/2=20 km
average speed = total distance/total time = 45/1 = 45 km/h
Answer : A
Question: The average of the two-digit numbers, which remain the same when the digits interchange their positions, is:
A.98
B.55
C.21
D.23
Answer: B.55
Explanation: Explanation:
Average = (11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99)/9
= [(11 + 99) + (22 + 88) + (33 + 77) + (44 + 66) + 55]/9
= [(4 * 110) + 55]/9 = 495/9 = 55.
Option B
Question: Eleven bags are bought for Rs.1000 and sold at 10 for Rs.1500. What is the gain or loss in percentage?
A.10%
B.21%
C.26%
D.20%
Answer: C.26%
Explanation: Explanation:
As selling price is Rs.1500 for 10 bags, each bag is sold at Rs.150.
Hence, the profit is Rs.100 after selling 10 bags plus the selling price of 1 bag = 100 + 150 = Rs.260.
%profit = 260/1000 *100
= 26%
ANSWER C
Question: a number divided by 34 leaves remainder 37 what is the remainder when same number divided by 9
A.7
B.8
C.9
D.0
Answer: D.0
Explanation: add 34+37=72
now 72divided by 9 so we get 0 as reaminder
ANSWER:D
Question: 9.4 , 9.9 , 9.9 , 9.9 , 10.0 , 10.2 , 10.2 , 10.5
The mean and the standard deviation of the 8 numbers shown above is 10 and 0.3 respectively. What percent of the 8 numbers a re within 1 standard deviation of the mean?
A.90%
B.85%
C.80%
D.75%
Answer: D.75%
Explanation: D. 75% answer is D
Question: The average age of 15 men of a group is 18 years. Out of these, the average age of 5 men is 14 years and that of the other 9 men is 16 years. The age of the 15th man is?
A.11 years
B.17 years
C.56 years
D.14 years
Answer: C.56 years
Explanation: Age of the 15th student
=[15 * 18 - (14 * 5 + 16 * 9)]
= (270- 214)
= 56 years.
Answer:C
Question: How many three letter words are formed using the letters of the word TIME?
A.22
B.28
C.27
D.24
Answer: D.24
Explanation: Explanation:
The number of letters in the given word is four.
The number of three letter words that can be formed using these four letters is â´Pâ‚ƒ = 4 * 3 * 2 = 24.
Answer: D
Question: Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even ?
A.3/4
B.1/4
C.7/4
D.1/2
Answer: A.3/4
Explanation: Explanation:
Total number of cases = 6*6 = 36
Favourable cases = [(1,2),(1,4),(1,6),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),(3,2),(3,4),(3,6),(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),(5,2),(5,4),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)] = 27
So Probability = 27/36 = 3/4
Option A
Question: A carpenter makes 4 bunk beds every day. A military school needs to organize a place to sleep for 143 soldiers. If there are 5 carpenters working on the job, how many whole days in advance should they receive the order and start working in order to finish the right number of beds assuming that each bunk- bed is used by two soldiers?
A.3.
B.4.
C.5.
D.6.
Answer: C.5.
Explanation: I believe it is C because if 1C makes 3 beds in 1 day then:
1C's rate = 3/1
So 5c's = 3/1 * 5 = 15/1 = 15 beds in a day.
Since we have 173 soldiers who need beds and bunk beds come in pairs, 72 is the least amount of beds needed.
Time = Amount / Rate
Time = 72 / (15/1) = 72/15, simplifying we get 72/15 = 24/5 = 4.7
So, in order for the carpenters to be able to finish they need 5 whole days. At first I made the mistake of thinking how many whole days it took them to finish (as in ignore the partial day) but the prompt clarifiesdays in advance, meaning how many days would they need to finish so even if they finish early, theyusedthat day.
C
Question: In the fifth grade at Parkway elementary school there are 420 students. 312 students are boys and 250 students are playing soccer. 82% of the students that play soccer are boys. How many girl student are in Parkway that is not playing soccer?
A.63.
B.73.
C.81
D.91
Answer: A.63.
Explanation: Total students = 420
Boys = 312, Girls = 108
Total playing soccer = 250
82%of 250 = 205 are boys who play soccer.
Girls who play soccer = 45.
Total girls who do not play soccer = 108 - 45 = 63.
Correct option: A
Question: A train 150 m long running at 72 kmph crosses a platform in 25 sec. What is the length of the platform?
A.271
B.266
C.350
D.277
Answer: C.350
Explanation: D = 72 * 5/18 = 25 = 500 – 150
= 350
Answer:C
Question: For one cake, a recipe calls for 3 cups of milk, 2 cups of sugar, and 2 cups of flour. Sally wants to bake as many cakes as possible and has 27 cups of milk and 18 cups of flour. How many cups of sugar does she need?
A.27
B.18
C.9
D.36
Answer: B.18
Explanation: First, we need to figure out how many cakes Sally can make with her milk and flour.
Both the amount of milk and flour she has is 9 times the amount needed for one cake, so she can make 9 cakes.
Since she needs sugar for 9 cakes, she needs 9 times 2 cups of sugar = 18 cups
Answer: B)
Question: 27 is a perfect cube. When x is perfect cube which is added to the prime factor of 27, the result is not a prime number. What is the square root of x?
A.2
B.4
C.6
D.8
Answer: C.6
Explanation: 27 is 3*3*3
2*2=4, 3+4=7
4*4=16, 3+16=17
6*6=36, 3+36=39
8*8=64, 3+64=67
10*10=100, 3+100=103
here C is the only addition that is not a prime number.
so the answer is C
Question: A rectangular grass field is 75 m * 55 m, it has a path of 2.5 m wide all round it on the outside. Find the area of the path and the cost of constructing it at Rs.2 per sq m?
A.675, Rs.1350
B.575, Rs.1350
C.1350, Rs.675
D.1450, Rs.775
Answer: A.675, Rs.1350
Explanation: Area = (l + b +2d) 2d
= (75 + 55 +2.5 * 2) 2*2.5 => 675
675 * 2 = Rs.1350
ANSWER:A
Question: From the integer n, if n*n*n is odd, then what is true from below options?
A.n is odd
B.n*n is even
C.n is odd and n*n is even
D.n is even
Answer: C.n is odd and n*n is even
Explanation: n is odd and n*n is even
Option C
Question: In how many different ways can the letters of the word ‘I’ be arranged?
A.7
B.2
C.3
D.1
Answer: D.1
Explanation: D
1
The word SMART has 1 distinct letters.
Number of arrangements = 1!
= 1 x 1 = 1
Answer is D
Question: Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 44 years. What will be the age of the B ten years hence?
A.22
B.88
C.26
D.96
Answer: B.88
Explanation: Let the present ages of A, B and C be a, b and c respectively.
Given, [(a - 5) + (b - 5)] / 2 = 40 => a + b = 90 --- (1)
(b + c)/2 = 44 => b + c = 88 --- (2)
From (1) and (2), we cannot find b.
Answer: B
Question: Two trains are moving in opposite directions @ 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is:
A.36
B.45
C.48
D.49
Answer: C.48
Explanation: Relative speed=60+90=150*5/18=(125/3)m/s
Total Distance covered=(1.10+0.9)= 2 km = 2000m
Required time = (2000*3/125) = 48sec
ANSWER:C
Question: A woman goes shopping during a door buster sale at JcPenney's. You are given a ticket with a random number on it when you arrive at the store. The number on the ticket is the pecent you get to take off of your total bill. The woman bought a shirt for $9.99, a pair of jeans for 19.99 and a jacket for $36.00. Her total was 65.98 before her secret door buster discount. If she paid 59.38 after her discount, What number did the woman have on her ticket?
A.10
B.5
C.15
D.20
Answer: A.10
Explanation: 65.98-59.38= 6.50 = amount of money saved
65.98÷6.50=9.999 = percent of the total bill
9.99 is rounded up to 10.
The answer is A
Question: Which of the following number is divisible by 4 and 9?
A.2368
B.2736
C.3954
D.3814
Answer: B.2736
Explanation: For a number to be divisible by 4, the number formed by the last two digits of that number must be divisible by 4.
For a number to be divisible by 9, the sum of its digits must be divisible by 9.
Among the choices, choices (a) and (b) are divisible by 4 but of the first two choices, only choice (b) is divisible by 9.
Hence choice (b) is divisible by both 4 and 9.
ANSWER:B
Question: A girl is organizing her jellybean collection in which each color has its own row. In each row, there are as many jellybeans as the number of jellybean colors. Her little brother chops each jellybean into the same number of peices as the number of jellybean colors. If the final number of jellybean pieces is m, then:
A.m is a perfect square
B.m is an odd number
C.m is an even number
D.m is a perfect cube.
Answer: D.m is a perfect cube.
Explanation: For example, if there were 4 jellybean colors, the girl would have made a 4x4 arrangement. The boy chopped up each jellybean into 4, the number of pieces would be (4*4)*4 = 64 pieces, which is a cube of 4.
Answer: D
Question: A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 16km?
A.3
B.6
C.8
D.9
Answer: C.8
Explanation: M = 4
S = 2
US = 4 - 2 = 2
D = 16
T = 16/2 = 8
Answer:C
Question: A train 600 m long can cross an electric pole in 20 sec and then find the speed of the train?
A.987
B.271
C.108
D.27
Answer: C.108
Explanation: Length = Speed * time
Speed = L/T
S = 600/20
S = 30M/Sec
Speed= 30*18/5 (To convert M/Sec in to Kmph multiply by 18/5)
Speed = 108 Kmph
Answer:C
Question: The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.3 years. The ration of the number of boys to the number of girls in the class is?
A.5:6
B.2:3
C.2:5
D.2:1
Answer: A.5:6
Explanation: Let the ratio be k : 1. Then,
k * 16.4 + 1 * 15.3 = (k + 1) * 15.8
= (16.4 - 15.8)k = (15.8 - 15.3)
= k = 0.5/0.6 = 5/6
Required ratio = 5/6 : 1 = 5:6.
Answer:A
Question: The sum of three consecutive integers is 102. Find the lowest of the three?
A.40
B.53
C.29
D.33
Answer: D.33
Explanation: Explanation:
Three consecutive numbers can be taken as (P - 1), P, (P + 1).
So, (P - 1) + P + (P + 1) = 102
3P = 102 => P = 34.
The lowest of the three = (P - 1) = 34 - 1 = 33.
ANSWER IS D
Question: By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?
A.25%
B.20%
C.18%
D.30%
Answer: A.25%
Explanation: SP = CP + g
150 SP = 150 CP + 30 SP
120 SP = 150 CP
120 --- 30 CP
100 --- ? => 25%
ANSWER A
Question: A ribbon is cut into three smaller strips in the ratio 2:3:5. If the shortest of the three strips is 30 inches in length, what was the length, in inches, of the ribbon before it was cut?
A.60
B.75
C.90
D.150
Answer: D.150
Explanation: Given 2x = 30 so x =15
Have to find 2x+3x+5x = 30+45+75= 150
Ans D