RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: 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?
A.7
B.6
C.5
D.8
Answer: D.8
Explanation: 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 = 8 kmph.Answer: D
Question: Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is?
A.4:7
B.4:3
C.4:0
D.4:2
Answer: B.4:3
Explanation: Let us name the trains A and B.
Then, (A's speed) : (B's speed)
= √b : √a = √16 : √9
= 4:3
Answer:B
Question: If x<0, y<0, and |x| > |y|, which of the following must be true?
A.x > y
B.y^2 > x^2
C.x^3 > y^2
D.x < y
Answer: D.x < y
Explanation: Correct Answer: (E)
Let’s go through each answer choice: (A) can never be true, since no negative is greater than a positive. (B) doesn’t have to be true – consider what would happen if x = -2 and y = 1. (C) can never be true, as x^3 must be negative, and y^2 must be positive. (D) can never be true, since if x < 0, -x is the same thing as |x|, and |x| > y. (E) can be manipulated by multiplying both sides by -1, which gives us –x > y. Remember that x < 0, so –x = |x|, and y is positive, so |y| = y. Thus x < y is the same statement as |x| > |y|, and (D) must be true.
Question: A thief steals at a car at 2.30 p.m. and drives it at 60 km/hr. The theft is discovered at 3 p.m. and the owner sets off in another car at 75 km/hr. When will he overtake the thief?
A.1 p.m
B.3 p.m
C.4 p.m
D.5 p.m
Answer: D.5 p.m
Explanation: D
5 p.m
Suppose the thief is overtaken x hrs after 2.30 p.m.
Then, distance covered by the owner in (x - 1/2) hrs.
60x = 75(x - 1/2) => x = 5/2 hrs.
So, the thief is overtaken at 5 p.m.
Question: A certain street contains 100 buildings.They are numbered from 1 to 100. How many 9s are used in numbering these buildings?
A.21
B.20
C.19
D.18
Answer: B.20
Explanation: 9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99
so number of 9's=20
ANSWER:B
Question: If 1/(c – 2) = 1/(c + 2) + 1/(c – 1), which of the following is a possible value of c?
A.-2
B.2
C.-1
D.0
Answer: D.0
Explanation: Multiply by (c-2)*(c+2)*(c-1) throughout to get:
(c+2)*(c-1) = (c-2)*(c-1) + (c+2)(c-2)
Of the given options, only c=0 satisfies this.
Answer : D
Question: What is the number? I. The sum of the two digits is 8. The ratio of the two digits is 1 : 3. II. The product of the two digit of a number is 12. The quotient of two digits is 3.
A.I alone sufficient while II alone not sufficient to answer
B.II alone sufficient while I alone not sufficient to answer
C.Either I or II alone sufficient to answer
D.Both I and II are not sufficient to answer
Answer: C.Either I or II alone sufficient to answer
Explanation: Let the tens and units digit be x and y respectively. Then,
I. x + y = 8 and	x/y	=	1/3
I gives, 4y = 24 y = 6.
So, x + 6 = 8 x = 2.
II. xy = 12 and	x/y	=	3/1
II gives, x^2 = 36 x = 6.
So, 3y = 6 y = 2.
Therefore, Either I or II alone sufficient to answer.
Option C
Question: In a division sum, the remainder is 6 and the divisor is 5 times the quotient and is obtained by adding 2 to the thrice of the remainder. The dividend is
A.74
B.78
C.86
D.92
Answer: C.86
Explanation: Divisor = (6 * 3) + 2 = 20
5 * Quotient = 20
Quotient = 4.
Dividend = (Divisor * Quotient) + Remainder
Dividend = (20 * 4) + 6 = 86.
C)
Question: In an examination, a student scores 4 marks for every correct answer and loses 1mark for every wrong answer. If he attempts all 200 questions and secures 240 marks, the number of questions he attempts incorrectly, is:
A.135
B.200
C.140
D.112
Answer: D.112
Explanation: Let the number of correct answers be x.
Number of incorrect answers = (200 â€“ x).
4x â€“ (200 â€“ x) = 240 or 5x = 440 or x = 88.
Number of incorrect answers=200-88=112
ANSWER:D
Question: Paper charge is Rs. 60 per kg. How much expenditure would be there to cover a cube of edge 10m with a paper, if one kg of paper covers 20 sq.m. area?
A.Rs. 2250
B.Rs. 3600
C.Rs. 2700
D.Rs. 1800
Answer: D.Rs. 1800
Explanation: Explanation:
Total surface area of the cube =6x(10)2=600sq.m
1kg covers 20sq.m area,for 600 we need=600/20=30kg paper.
Expenditure=rate x quantity=Rs.60x30kg=Rs.1800
ANSWER IS D
Question: Last year, the taxes for small enterprises, was a minimum of 28 dollars for every 5000 dollars of revenue. Tax rates were revised this year to a minimum tax of 2.5 dollars for every 1500 dollars of revenue. By approximately what percent did the ratio of tax to revenue decrease from the previous charge?
A.70
B.69
C.71
D.66
Answer: A.70
Explanation: Initial tax/revenue ratio = 28/5000 = 84/15000
Revised charge/transaction ratio = 2.5/1500 = 25/15000
Answer: A
Question: A person crosses a 800m long street in 10 minnutes. What is his speed in km per hour?
A.5.8km/hr
B.4.68km/hr
C.9km/hr
D.2.5km/hr
Answer: B.4.68km/hr
Explanation: Speed = 800/10*60 = 1.3m/sec
=1.3*18/5
=4.68km/hr
Answer is B
Question: If A speaks the truth 40% of the times, B speaks the truth 20% of the times. What is the probability that at least one will tell the truth
A.1.8
B.2.0
C.1.52
D.0.52
Answer: D.0.52
Explanation: probability of A speaks truth p(A)=4/10;false=6/10
probability of B speaks truth p(B)=2/10;false=8/10.For given qtn
Ans=1-(neither of them tell truth).Because A & B are independent events
=1-[(6/10)*(8/10)]=1-48/100=1-0.48=0.52
ANSWER:D
Question: This is a famous paradox probability riddle which has caused a great deal of argument and disbelief from many who cannot accept the correct answer.
Four balls are placed in a bowl. One is Green, one is Black and the other two are Yellow. The bowl is shaken and someone draws two balls from the bowl. He looks at the two balls and announces that atleast one of them is Yellow. What are the chanches that the other ball he has drawn out is also Yellow?
A.1/4
B.1/5
C.1/6
D.1/7
Answer: B.1/5
Explanation: B
1/5
There are six possible pairings of the two balls withdrawn,
Yellow+Yellow
Yellow+Green
Green+Yellow
Yellow+Black
Black+Yellow
Green+Black.
We know the Green + Black combination has not been drawn.
This leaves five possible combinations remaining. Therefore the chances tbowl the Yellow + Yellow pairing has been drawn are 1 in 5.
Many people cannot accept tbowl the solution is not 1 in 3, and of course it would be, if the balls had been drawn out separately and the color of the first ball announced as Yellow before the second had been drawn out. However, as both balls had been drawn together, and then the color of one of the balls announced, then the above solution, 1 in 5, must be the correct one.
Question: Find the compound interest on $ 36,000 at 20% per annum for 9 months, compounded quarterly
A.2532.6
B.2552.2
C.2524.1
D.5674.5
Answer: D.5674.5
Explanation: Principal = $ 36000; Time = 9 months =3 quarters;
Rate = 20% per annum = 5% per quarter.
Amount = $ [36000 x (1+(5/100))^3] = $ 41674.5
CI. = $ (41674.5 - 36000) = $ 5674.5
Answer D.
Question: A discount electronics store normally sells all merchandise at a discount of 2 percent to 50 percent off the suggested retail price. If, during a special sale, an additional 20 percent were to be deducted from the discount price, what would be the lowest possible price of an item costing $100 before any discount?
A.$100.00
B.$40.00
C.$50.00
D.$30.00
Answer: B.$40.00
Explanation: Original price : 100 $
Max first discount = -50%
Thus : 100âˆ—(1âˆ’50/100)=50
Second discount on the discounted price = -20%
Thus : 50âˆ—(1âˆ’20/100)=40
Answer B.
Question: Which of the following numbers should not be included in the set?
331, 482, 551, 263, 385, 242, 111
A.263
B.385
C.242
D.111
Answer: B.385
Explanation: Solution
In each number except 385,the product of first and third digits is the middle one. Answer B
Question: What should come in place of the question mark (?) in the following equation?
90000 + 5010 = 87050 + ?
A.7960
B.7554
C.8465
D.4578
Answer: A.7960
Explanation: 90000 + 5010 = 87050 + ?
90000 + 5010 – 87050 = 7960
Answer A
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.1350
B.2997
C.2087
D.2697
Answer: A.1350
Explanation: Area = (l + b +2d) 2d
= (75 + 55 +2.5 * 2) 2*2.5
=> 675
675 * 2
= Rs.1350
Answer:A
Question: Each person who attended a company meeting was either a stockholder in the company, an employee of the company, or both. If 60 percent of those who attended the meeting were stockholders and 47 percent were employees, what percent were stockholders who were not employees?
A. 34%
B. 38%
C. 45%
D. 53%
Answer: D. 53%
Explanation: Let M represent the number of meeting attendees. Then, since 60% of M or 0.60M
were stockholders and 47% of M or 0.47M were employees, it follows that 0.60M +
0.47M = 1.07M were either stockholders, employees, or both. Since 1.07M exceeds
M, the excess 1.07M − M = 0.07M must be the number of attendees who were both
stockholders and employees, leaving the rest 0.60M − 0.07M = 0.53M, or 53%, of
the meeting attendees to be stockholders but not employees.
The correct answer is D.
Question: The average weight of 5 persons increases by 1.5 kg. If a person weighing 65 kg is replaced by a new person, what could be the weight of the new person?
A.76 kg
B.77 kg
C.72.5 kg
D.Data inadequate
Answer: C.72.5 kg
Explanation: total weight increases = 5 × 1.5 = 7.5 kg
so the weight of new person = 65 + 7.5 = 72.5 kg
Answer C
Question: A certain NYC taxi driver has decided to start charging a rate of r cents per person per mile. How much, in dollars, would it cost 5 people to travel x miles if he decides to give them a 50% discount?
A.xr/40
B.3x/200r
C.3r/200x
D.3xr/200
Answer: A.xr/40
Explanation: 1 person for x miles = xr cents
5 person for x miles = 5xr
After discount 50% = 5xr/2 cents
In dollars = 5xr/200= xr/40
Answer : A
Question: n a 1000m race, if A gives B a start of 40m, A wing by 19sec. But if A gives B start of 30sec, B wins by 40m.
Find the time taken by B to run 1000m race?
A.125
B.130
C.140
D.150
Answer: A.125
Explanation: then 960/B -1000/A = 19 => 24/B - 25/A = 19/40
and 1000/B - 960/A = 30 => 25/B - 24/A = 30/40
solving equation A speed =8 and B=20/3
for 1000m b will take 1000/20/3= 125 sec
A
Question: If there are 85 students in a statistics class and we assume that there are 365 days in a year, what is the probability that at least two students in the class have the same birthday (assuming birthdays are distributed independently)?
A.85/365∗84/364
B.13/65∗13/64
C.1 - 85!/365!
D.1 - {365!}/{280!(365^8^5)}
Answer: D.1 - {365!}/{280!(365^8^5)}
Explanation: Probability(At Least 2 share a bday) = 1 - Probability(All 85 have distinct birthdays)
total ways to pick 85 birthdays = 365^85
Ways to pick distinct 85 out of the 365 & distribute it to 85 people = C(365,85)*85!
Hence Probability = 1−365!/280!36585
ANswer is D
Question: A doctor prescribed 12 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage lesser than the typical dosage?
A.8%
B.-25%
C.11%
D.12.5%
Answer: B.-25%
Explanation: Typical dosage per 15 pound of the body weight = 2 c.c
Typical dosage per 120 pound of the body weight = 2 *(120/15)
= 2 * 8
= 16 c.c
Dosage prescribed by doctor for 120 pound patient = 12 c.c
% prescribed dosage greater than the typical dosage = (12-16/16) *100%
=(-4/16) *100%
= -25%
Answer B
Question: If the simple interest on Rs.3100 amount to Rs. 632.40 in 2 Years, What is the rate percent?
A.11.2%
B.10.2%
C.12.2%
D.13.2%
Answer: B.10.2%
Explanation: $632.40 = (3100*2*R)/100
R = 10.2%
Answer: B
Question: Compound interest earned on a sum for the second and the third years are Rs.1200 and Rs.1440 respectively. Find the rate of interest?
A.22
B.27
C.20
D.288
Answer: A.22
Explanation: Rs.1440 - 1200 = Rs.240 is the interest on Rs.1200 for one year.
Rate of interest = (100 * 240) / (100 * 1) = 20% p.a
Answer: A
Question: There are 9 novel books, 4 drama books, 12 poetry books and 7 grammar books in my bookshelf. The books are randomly arranged in the shelf and not at all in the order of their type. What is the least number of books that must be drawn from the shelf in order to get 6 books of a particular type?
A.a)	20
B.b)	23
C.c)	25
D.d)	28
Answer: A.a)	20
Explanation: Indeed the answer is A. for the reason explained above
Question: A person purchased a TV set for Rs. 18000 and a DVD player for Rs. 5000. He sold both the items together for Rs. 46000. What percentage of profit did he make?
A.100%
B.90%
C.140%
D.115%
Answer: A.100%
Explanation: The total CP = Rs. 18000 + Rs. 5000
= Rs. 2300 and SP
= Rs. 46000
Profit(%)
= (46000 - 23000)/23000 * 100
= 100%
Answer:A
Question: The smallest number which when diminished by 5, is divisible by 12, 16, 18, 21 and 28 is
A.1008
B.1013
C.1022
D.1032
Answer: B.1013
Explanation: Required Number = (L.C.M of 12, 16, 18,21,28)+5
= 1008 + 5
= 1013
Answer: B
Question: A certain factory employed 600 men and 400 women and the average wager was Rs. 25.50 per day, If a woman got Rs. 5 less than a man, then what are their daily wages ?
A.m:27.50 w:22.22
B.m:27.50 w:22.50
C.m:27.50 w:22.20
D.m:23.50 w:22.50
Answer: B.m:27.50 w:22.50
Explanation: Explanation:
Let the daily wage of a man be Rs. x.
Then, daily wage of a woman = Rs. (x - 5).
Now, 600x + 400 (x - 5) = 25.50 * (600 + 400) <=> 1000x = 27500 <=> x = 27.50.
Man's daily wages = Rs. 27.50; Woman's daily wages = (x - 5) = Rs. 22.50
Answer: B
Question: In how many ways can 10 different gifts be divided among four children such that each child receives exactly two gifts?
A.16^4
B.(4!)^4
C.10!/(2!)^4
D.16!/4!
Answer: C.10!/(2!)^4
Explanation: Total 10 different Gifts, and 4 children.
Thus any one child gets 10C2 gifts,
then the other child gets 8C2 gifts(10 total - 2 already given),
then the third one gets 6C2 gifts,
and the last child gets 4C2 gifts.
Since order in which each child gets the gift is not imp, thus, ans :
10C2 * 8C2 * 6C2 * 4C2 = 10! / (2!)^4
Ans : C.
Question: There are 11 software engineers and 7 civil engineers in a company. Theyare selecting member for row. In how many ways can they be seated in a row so that no two of the civil engineers will sit together?
A.10!×11!/5!
B.9!×11!/4!
C.11!×12!/5!
D.9!×5!/4!
Answer: C.11!×12!/5!
Explanation: 11 software engineers can be arranged in 11! ways. ...(A)
Now we need to arrange civil engineers such that no two civil engineers can be seated together. i.e., we can arrange 7 civil engineers in any of the 12 (=11+1) positions marked as * below.
* 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10 * 11 *
(where 1, 2… 11 represent software engineers)
This can be done in 12P7 ways. ...(B)
From (A) and (B),
required number of ways
= 11! × 12P7
=11!×12!/5!
C
Question: If Albert’s monthly earnings rise by 20%, he would earn $560. If, instead, his earnings rise by only 21%, how much (in $) would he earn this month?
A.643
B.652
C.660
D.564
Answer: D.564
Explanation: =560/1.2∗1.21
=564=564
Answer is D
Question: If x is a positive integer, and two sides of a certain triangle have lengths x+2 and x+2 respectively, which of the following could be the length of the third side of the triangle?
I. x + 1
II. x + 5
III. 2x + 1
A.I only
B.II only
C.I and II only
D.I and III only
Answer: D.I and III only
Explanation: Let the third side of triangle be AB.
Triangle rule states that:
Difference of other 2 sides < any side < sum of other two sides
So x+2 - (x+2) < AB < x+2 + (x+2)
i.e. 0 < AB < 2x + 4
Let's take x =1 :
So 0 < AB < 6
Check if any of the answers are between 0 and 4.
I: x+1 = 2 ; could be a possible value.
II: x+5 = 6 ; could not be a possible value.
III: 2x+1 = 3; could be a possible value.
I, II and III could not be a possible value.
Answer: D
Question: Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 972 as interest at the end of the loan period, what was the rate of interest?
A.3.6
B.6
C.9
D.Cannot be determined
Answer: C.9
Explanation: let rate = R% and time = R years
Then ( 1200 x R x R /100) = 972
=> 12R2= 972
=> R2= 81
=> R= 9
Answer C
Question: Mike's age is 40 years. If he is 4 more than four times the age of his son, find the age of his son.
A.20 years
B.12 years
C.16 years
D.9 years
Answer: D.9 years
Explanation: Let Mike's son age be x.
4+ 4 x = 40
x = 9
Hence Mike's son age is 9 years
Answer : D
Question: Alex has to take a quiz, which has ten true false-type question each carry 1 mark. What is the probability that Alex's can score more than 8 mark in the quiz. Given that he decides to guess randomly on the quiz.
A.12/1024
B.11/1024
C.11/256
D.12/256
Answer: B.11/1024
Explanation: Each question has 2 options (True or false). Total number of ways of answering all 10 questions = (2)10(2)10
More than 8 correct means either 9 correct or all correct.
Number of ways such that 9 correct = 10! / 9! = 10
Number of ways of All correct = 1
Therefore, probability of more than 8 correct = 11/(2)1011/(2)10 = 11/1024
ANSWER:B
Question: A shopkeeper forced to sell at cost price, uses a 950 grams weight for a kilogram. What is his gain percent?
A.10%
B.9%
C.11.11%
D.5.26 %
Answer: D.5.26 %
Explanation: Shopkeeper sells 950g instead of 1000g.
So, his gain = 1000 - 950 = 50g.
Thus, %Gain = (50 *100)/950 = 5.26%.
answer : OPTION D
Question: If the ratio of a to b is 2 to 3 and the ratio of b to c is 1 to 5, what is the ratio of a to c?
A.4/15
B.1/3
C.2/15
D.4/5
Answer: C.2/15
Explanation: a:b = 2:3 -- 1
b:c = 1:5
=>b:c = 3 :15 --2
From 1 and 2 , we get
a:c = 2:15
Answer C
Question: The area of a square field is 1600 km2. How long will it take for a horse to run around at the speed of 16 km/h ?
A.12 h
B.10 h
C.8 h
D.6 h
Answer: B.10 h
Explanation: Explanation Area of field =1600 km2. Then, each side of field = √1600=40km Distance covered by the horse = Perimeter of square field = 40 × 4 = 160 km ∴ Time taken by horse = distances/peed=160/16=10h Answer B
Question: The speed of a train is 120 kmph. What is the distance covered by it in 8 minutes?
A.15 kmph
B.11 kmph
C.16 kmph
D.18 kmph
Answer: C.16 kmph
Explanation: 120 * 8/60
= 16 kmph
Answer:C
Question: A wheel rotates 20 times every minute and moves 20 cm during each rotation. How many metres does the wheel move in one hour?
A.4 metre
B.12 metre
C.240 metre
D.2400 metre
Answer: C.240 metre
Explanation: Number of times wheel moves in 1 hour = 20 * 60 = 1200
:. Distance moves = (1200*20) cms = 24000 cms
In metres = 240 metre
ANSWER:C
Question: Daniel’s only source of income comes from his job as a question writer. In this capacity, Daniel earns a flat salary of $200 per week plus a fee of $7 for every question that he writes. Every year, Daniel takes exactly two weeks of unpaid vacation to visit his uncle, a monk in Tibet, and get inspired for the next year. If a regular year consists of 52 weeks and the number of questions that Daniel wrote in each of the past 5 years was an odd number greater than 20, which of the following could be Daniel’s median annual income over the past 5 years?
A.$22,474
B.$25,673
C.$27,318
D.$28,513
Answer: B.$25,673
Explanation: Okay u just need less than one min to answer this question. any odd number greater than 20 means that that last digit must be 1,3,5,7, or 9. 7$ per week for every question. So (odd)(odd) will give odd digit. A and C out. (50 weeks) (200) = 10,000. subtract this amount from option B, C and E and u will find that only option B is divisible by 7 (once 10,000 is subtracted from 25673) so its the right choice..B.
Question: A man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey?
A.7 kmph
B.4 kmph
C.8 kmph
D.3 kmph
Answer: B.4 kmph
Explanation: M = 45
S = 1.5
DS = 6
US = 3
AS = (2 * 6 * 3) /9 = 4
Answer: B
Question: If the average weights of three groups of 15,20,25 children respectively is 20,25,30 what is the average weights of all the children?
A.32.89
B.12.89
C.38.76
D.25.83
Answer: D.25.83
Explanation: Average weights of group 1 =20
children in group 1 = 15
Total weights of group 1 = 15*20
Average weights of group 2 = 25
children in group 2 = 20
Total weights of group 2 = 25*20
Average weights of group 3 = 30
children in group 3 = 25
Total weights of group 3 = 25*30
Total children = 15+20+ 25 = 60
Average weights of all the children
=((15*20)+(25×20)+(25×30))/60
=155/6
=25.83
Answer is D.
Question: A certain company consists of 6 managers and 8 non-managers. How many different teams of 3 employees can be formed in which at least one member of the team is a manager and at least one member of the team is not a manager? (Two groups are considered different if at least one group member is different)
A.84
B.108
C.135
D.288
Answer: D.288
Explanation: Total # of teams of 3 possible is 14C3=364
# of teams with only managers or only non-managers is: 6C3+8C3=20+56=76;
# of teams of 3 with at least one manager or at least one non-manager is: 364-76=288.
ANSWER:D
Question: The average of four positive integers is 69. The highest integer is 93 and the least integer is 39. The difference between the remaining two integers is 28. Which of the following integers is the higher of the remaining two integers?
A.22
B.86
C.68
D.55
Answer: B.86
Explanation: Let the four integers be A, B, C and D where A > B > C > D.
(A + B + C + D)/4 = 69 => A + B + C + D = 276 ---> (1)
A = 93, D = 39 and B - C = 28
(1) => B + C = 276 - (A + D) = 276 - 132 = 144.
B + B -28 = 144
B = (144 + 28)/2 = 86
Answer: B
Question: On a trip covering 250 km, a bicyclist travels the first 100 km at 20 km per hour and the remainder of the distance at 15 km per hour. What is the average speed, in km per hour, for the entire trip?
A.15.8
B.16.3
C.16.7
D.17.2
Answer: C.16.7
Explanation: time 1 = 100 / 20 = 5 hours
time 2 = 150 / 15 = 10 hours
total time = 15 hours
average speed = 250 / 15 = 16.7 km/hr
The answer is C.
Question: According to a survey, at least 60% of people like apples, at least 75% like bananas and at least 80% like cherries. What is the minimum percentage of people who like all three?
A.15%
B.20%
C.25%
D.0%
Answer: A.15%
Explanation: It seems that something is wrong with your answer options.
1) minimum applesbananas:
[XXXXXXXXXXXXXX------] - apples
[-----XXXXXXXXXXXXXXX] - bananas
mimimum ab = 60 - (100-75) = 35%
2) minimum (applesbananas)cherries:
[XXXXXXXXX-----------] - applesbananas
[----XXXXXXXXXXXXXXXX] - cherries
mimimum ab = 35 - (100-80) =15%
A
Question: Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?
A.12
B.50
C.87
D.26
Answer: B.50
Explanation: Let the distances between city A to B and B to C be 2x km and 3x km respectively.
Total time taken to cover from A to C
= (2x)/40 + (3x)/60 = (6x + 6x)/120 = 12x/120 = x/10 Average speed = (2x + 3x)/(x/10)
= 50 kmph.
Answer: B
Question: If an amount of Rs 11,200 is divided equally among
35 students, approximately how much amount will
each student get?
A.Rs 206
B.Rs 360
C.Rs 300
D.Rs 320
Answer: D.Rs 320
Explanation: Amount received by each student = 11,200/35 â‰ˆ Rs
320
Answer D
Question: Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank?
A.15
B.16
C.12
D.14
Answer: B.16
Explanation: 1/20 + 1/30 = 1/12
1 + 1/3 = 4/3
1 --- 12
4/3 --- ?
4/3 * 12 = 16 hrs
ANSWER B