6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

21 is 35 of what number?

A) 60	B) 85
C) 300	D) 21

Answer & Explanation Answer: A) 60

Explanation:

The given sentence 21 is 35 of what number means that

21 is 35 % of what number

Let that number be P

=> 35P/100 = 21

35P = 2100

P = 2100/35 = 300/5 = 60

Hence, 21 is 35 of 60.

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
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3 3168

Q:

If 3x + 2y = 7 and 4x - y = 24, then x - y = ______.

A) 9	B) 1
C) -9	D) -1

Answer & Explanation Answer: A) 9

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

8 3168

Q:

B starts 4.5 minutes after A from the same point, for a place at a distance of 3.5 miles from the starting point. A on reaching the destination turns back and walk a mile where he meets B. If A's speed is a mile in 6 minutes then B's speed is a mile in ____ minutes?

A) 8	B) 10
C) 12	D) 9

Answer & Explanation Answer: D) 9

Explanation:

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Filed Under: Time and Distance
Exam Prep: Bank Exams

5 3166

Q:

A shopkeeper by selling 17 Omega watches, earns a profit equal to the selling price of 7 Omega watches. What is his profit percentage?

A) 41.1 percent	B) 82.2 percent
C) 70 percent	D) 12.2 percent

Answer & Explanation Answer: C) 70 percent

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

1 3158

Q:

Price of petrol increased from Rs 60/liter to Rs 75/liter. How much should the consumption of petrol be reduced (in %) so as to increase expenditure by only 10%?

A) 12	B) 20
C) 15	D) 18

Answer & Explanation Answer: A) 12

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

0 3149

Q:

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = ?

A) 0	B) 2
C) 12	D) 10

Answer & Explanation Answer: C) 12

Explanation:

Given

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1

Using BODMAS Rule,

As multiplication precedes addition, 1 x 0 = 0,

Now, 10 + 0 + 1 + 1 = 10 + 2 = 12.

Hence, 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = 12.

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

6 3145

Q:

A prime number contains the digit X at unit’s place. How many such digits of X are possible?

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

Answer & Explanation Answer: D) 6

Explanation:

For prime no units place cannot be occupied by even number except for 2

Thus no of digits occupying unit digit of prime numbers = 6 (1,2,3,5,7,9)

Example 2,3,5,7,11,19 in itself are prime numbers

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Filed Under: Numbers
Exam Prep: Bank Exams

1 3141

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

Quantitative Aptitude - Arithmetic Ability Questions

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