6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Find the square root of 15625.

A) 125	B) 145
C) 150	D) 135

Answer & Explanation Answer: A) 125

Explanation:

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Filed Under: Numbers

2 2151

Q:

Ashok can row upstream at 8 kmph and downstream at 12kmph.What is the speed of the stream ?

A) 6 km/hr	B) 3 km/hr
C) 2 km/hr	D) 4.5 km/hr

Answer & Explanation Answer: C) 2 km/hr

Explanation:

If the speed downstream is a kmph and the speedup stream is b kmph then
Speed of the stream = 1/2 x (a–b) kmph
Speed downstream a = 12kmph
Speed upstream b = 8 kmph
Speed of the stream = 1/2 x (a–b) = 1/2 x (12–8)= 4/2 = 2 kmph

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

7 2151

Q:

3/8 as a decimal

A) 1.375	B) 2.375
C) 0.375	D) 3.75

Answer & Explanation Answer: C) 0.375

Explanation:

Expressing 3/8 as a decimal fraction:

We can convert 3/8 into a decimal fraction by just dividing 3 by 8 or making 3 into 8 parts.

Then, it is 3/8 = 0.375 as a decimal fraction.

Other Method::

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

=> ( $\frac{3 x 125}{8 x 125} = \frac{375}{1000} = 0.375$

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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3 2150

Q:

If the least common multiple of two numbers, 1728 and K is 5184, then how many values of K are possible?

A) 11	B) 8
C) 6	D) 7

Answer & Explanation Answer: D) 7

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

1 2149

Q:

If a certain sum of money become thrice of itself in 5 years 4 months at simple interest, then what will be the yearly rate of interest (in %)?

A) 18.75	B) 27.5
C) 37.5	D) 42.25

Answer & Explanation Answer: C) 37.5

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

1 2149

Q:

A wholesaler sells a watch to a retailer at a profit of 8% and the retailer sells it to a customer at a profit of 12%. If the customer pays Rs. 8,448 what had it cost (approximately) to the wholesaler (in Rs)?

A) 6984	B) 6082
C) 7120	D) 7022

Answer & Explanation Answer: A) 6984

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

4 2148

Q:

To travel 732 km, an Express train takes 6 hours more than Rajdhani. If the speed of the Express train is doubled, it takes 3 hours less than Rajdhani. The speed of Rajdhani is

A) 81.3 km/hr	B) 61 km/hr
C) 40.7 km/hr	D) 101.7 km/hr

Answer & Explanation Answer: B) 61 km/hr

Explanation:

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

1 2146

Q:

Choose the odd one out from among the given figures.

A) B	B) C
C) D	D) A

Quantitative Aptitude - Arithmetic Ability Questions

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