6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

20% of 120?

A) 20	B) 24
C) 32	D) 36

Answer & Explanation Answer: B) 24

Explanation:

20% of 120

20 x 120/100

= 4 x 6

= 24

Hence, 20% of 120 = 24.

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Filed Under: Percentage
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3 2635

Q:

If 1 shirt is offered free on purchase of 4 shirts, what is the effective discount (in %) on each shirt?

A) 25	B) 20
C) 16	D) 24

Answer & Explanation Answer: B) 20

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

0 2631

Q:

If $4^{(x + y)} = 256 and {(256)}^{(x - y)} = 4$ , then what is the value of x and y?

A) 17/8, 15/8	B) 17/4, 15/4
C) 9/17, 15/17	D) 8/17, 8/15

Answer & Explanation Answer: A) 17/8, 15/8

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

2 2629

Q:

Find the number which multiplied by 15 is increased by 56 ?

A) 6	B) 4
C) 3	D) 12

Answer & Explanation Answer: B) 4

Explanation:

Let the number be x. Then,

15x - x = 56

x = 4

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT
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2 2628

Q:

A and B are positive integers. If A + B + AB = 65, then what is the difference between A and B (A, B ≤ 15)?

A) 3	B) 4
C) 5	D) 6

Answer & Explanation Answer: C) 5

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2627

Q:

A sum of Rs. 2600 is invested at two different rates of interest. The difference between the simple interests got after 4 years is Rs 402.80 at these two rates, what is the difference between the rates of interest?

A) 1.58	B) 2.63
C) 3.87	D) 4.02

Answer & Explanation Answer: C) 3.87

Explanation:

Let the two different rates of interests be r1 and r2 respectively.

From the given data,

$\frac{2600 x 4 x (r 1 - r 2)}{100} = 402.80 (r 1 - r 2) = \frac{402.80}{104} = 3.87$

Hence, the difference in the interest rates = 3.87

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Filed Under: Simple Interest
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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7 2625

Q:

A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite sideof Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?

A) 90	B) 45√3
C) 45(√3+1)	D) 45(√3+2)

Answer & Explanation Answer: D) 45(√3+2)

Explanation:

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Filed Under: Height and Distance
Exam Prep: Bank Exams

7 2623

Q:

A does 75% of a work in 50 days. He then calls in B and they together finish the remaining work in 10 days. How long B alone would take to complete the whole work?

A) 200 days	B) 50 days
C) 100 days	D) 125 days

Quantitative Aptitude - Arithmetic Ability Questions

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