6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

K men agree to donate a gift of Rs. L to trust. If three men drop out how much more will each have to contribute towards the purchase of the gift ?

A) L / (k-3)	B) k / (L-3)
C) 2K / 3L-K	D) 3L / K(K-3)

Answer & Explanation Answer: D) 3L / K(K-3)

Explanation:

Intial contribution = L/K
After 3 men drop, then contribution =L/K-3
The amount more to pay in contribution = $\frac{L}{K - 3} - \frac{L}{K}$

= $\frac{3 L}{K (K - 3)}$

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Q:

In a single throw with 2 dices, what is probability of neither getting an even number on one and nor a multiple of 3 on other?

A) 11/36	B) 25/36
C) 5/6	D) 1/6

Answer & Explanation Answer: B) 25/36

Explanation:

We first calculate the probability of getting an even number on one and a multiple of 3 on other,Here, n(s) = 6x6 = 36 and

E = (2,3) (2,6) (4,3) (4,6) (6,3) (6,6) (3,2) (3,4)(3,6) (6,2)(6,4)

n(E) = 11P(E) = 11/36Required probability = 1-11/36 = 25/36

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Filed Under: Probability
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Q:

The difference between cost price and selling price is Rs 451. If loss percentage is 11%, then what is the selling price (in Rs)?

A) 3254	B) 3649
C) 3857	D) 4100

Answer & Explanation Answer: B) 3649

Explanation:

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Filed Under: Profit and Loss
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Q:

What is the discount percentage offered on a book having marked price Rs 2150 being sold at Rs 1892?

A) 12	B) 13
C) 14	D) 15

Answer & Explanation Answer: A) 12

Explanation:

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Filed Under: Percentage
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Q:

By selling 90 pens for Rs 80 a man loses 20%. What should be the selling price (in Rs) of 90 pens for 20% profit?

A) 90	B) 100
C) 110	D) 120

Answer & Explanation Answer: D) 120

Explanation:

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Filed Under: Profit and Loss
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Q:

A, B and C invested amounts in the ratio 3 : 4 : 5 respectively. If the schemes offered compound interest at the rate of 20% per annum, 15% per annum and 10% per annum respectively, then what will be the ratio of their amounts after 1 year?

A) 3 : 15 : 25	B) 6 : 6 : 5
C) 36 : 46 : 55	D) 12 : 23 : 11

Answer & Explanation Answer: C) 36 : 46 : 55

Explanation:

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Filed Under: Partnership
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Q:

A, B and C are three students. A got 18% more marks than B and 12% less than C. If B got 220 marks, then how much marks C has got?

A) 295	B) 230
C) 224	D) 245

Answer & Explanation Answer: A) 295

Explanation:

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Q:

The ratio of present ages of R and S is 11:17. Before 11 years the ratio of their ages was 11:20. What is R's present age (in years)?

A) 51	B) 33
C) 22	D) 40

Quantitative Aptitude - Arithmetic Ability Questions

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