6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A’s salary is 50% more than B’s. How much percent is B’s salary less than A’s?

A) 24.5%	B) 29.5%
C) 31.3%	D) 33.3%

Answer & Explanation Answer: D) 33.3%

Explanation:

Let the salary of B be 100

Salary of A = 150%

B’s salary less than A = (150-100)/150 X 100 = 100/3 = 33.33%

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Filed Under: Percentage
Exam Prep: Bank Exams

2 3106

Q:

A text book of mathematics cost 2 Rs/- more than a text book of literature. If 5 literature books cost 38 Rs/- more than 3 mathematics books, what is the cost of each literature book?

A) 44	B) 22
C) 24	D) 11

Answer & Explanation Answer: B) 22

Explanation:

Let each literature text book cost be Rs. X

Then, cost of mathematics text book = Rs. (X + 2)

ATQ,

5X = 38 + 3(X + 2)

5X = 38 + 3X + 6

2X = 44

X = 22.

Therefore, cost of each literature text book = Rs. X = Rs. 22.

And that of masthematics = X + 2 = Rs. 24.

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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3 3105

Q:

In an election between two candidates, the winning candidate has got 70% of the votes polled and has won by 15400 votes. What is the number of votes polled for loosing candidate?

A) 38500	B) 11550
C) 26950	D) 13550

Answer & Explanation Answer: B) 11550

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

5 3103

Q:

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:

A) 18 m	B) 20 m
C) 27m	D) 9 m

Answer & Explanation Answer: B) 20 m

Explanation:

A : B = 100 : 90.

A : C = 100 : 72.

B:C = B/A*A/C = 90/100*100/72 = 90/72

When B runs 90 m, C runs 72 m.

When B runs 100 m, C runs (72/90*100)m = 80m

B can give C 20 m.

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Filed Under: Races and Games

5 3103

Q:

A water tank is filled in 5 hours by three pipes X, Y and Z the pipe Z is thrice as fast as Y and Y is twice as fast as X. How much time will pipe X alone take to fill the water tank?

A) 60 hrs	B) 45 hrs
C) 40 hrs	D) 35 hrs

Answer & Explanation Answer: B) 45 hrs

Explanation:

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Filed Under: Pipes and Cistern
Exam Prep: AIEEE , Bank Exams , CAT

10 3099

Q:

The ages of Sunitha and Pranitha are 40 years and 60 years, respectively. How many years before the ratio of their ages was 3 : 5?

A) 10 years	B) 15 years
C) 18 years	D) 24 years

Answer & Explanation Answer: A) 10 years

Explanation:

Given the ages of Sunitha and Pranitha are 40 years and 60 years.

Let before 'm' years, their ages be in the ratio of 3 : 5

ATQ,

$\frac{40 - m}{60 - m} = \frac{3}{5}$

=> 200 - 5m = 180 - 3m

=>2m = 20

=> m = 10 years.

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Filed Under: Problems on Ages
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3 3095

Q:

The average weight of 50 boys in a class is 45 Kg. When one boy leaves the class, the average reduces by 100g. Find the weight of the boy who left the class.

A) 50 Kg	B) 50.8 Kg
C) 49 Kg	D) 49.9 Kg

Answer & Explanation Answer: D) 49.9 Kg

Explanation:

Total weight of 50 boys = 45 X 50 = 2250

Average weight of 49 boys = 44.9

Total weight of 49 boys = 44.9 X 49 = 2200.1

Weight of boy who left the class=2250–2200.1=49.9

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Filed Under: Average

3 3094

Q:

A watch loses 5 minutes every hour and was set right at 6 a.m. on a Monday. When will it show the correct time again?

A) 6 a.m. on next Sunday	B) 3 a.m. on next Monday
C) 3 a.m. on next Sunday	D) 6 a.m. on next Monday

Quantitative Aptitude - Arithmetic Ability Questions

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