6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Price of diesel increased from Rs 45/litre to Rs 50/litre. How much should the consumption of diesel be reduced (in %) so as to increase expenditure by only 5%?

A) 5.5	B) 5
C) 4	D) 4.5

Answer & Explanation Answer: A) 5.5

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

3 2296

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 2296

Q:

Two numbers are 50% and 75% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

A) 50	B) 25
C) 75	D) 100

Answer & Explanation Answer: D) 100

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

In the given figure, PQRS is a rectangle and a semicircle with SR as diameter is drawn. A circle is drawn as shown in the figure. If QR = 7 cm, then what is the radius (in cm) of the small circle ?

A) 21 + 14√2	B) 21 – 14√2
C) Both 21 + 14√2 and 21 – 14√2	D) None of these

Answer & Explanation Answer: B) 21 – 14√2

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

If 2A = 3B = 8C; What is A : B : C?

A) 8 : 3 : 2	B) 8 : 4 : 3
C) 2 : 3 : 8	D) 12 : 8 : 3

Answer & Explanation Answer: D) 12 : 8 : 3

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

20% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

A) 24 percent	B) 25.2 percent
C) 25 percent	D) 6 percent

Answer & Explanation Answer: A) 24 percent

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

2/3 of a milk-water mixture was milk. There was 21 lit of the mixture. If 4 lit of water is added to it, the % of milk in the new mixture will be:

A) 56	B) 11
C) 44	D) 14

Answer & Explanation Answer: A) 56

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

Rahul's age is three times the age of Sumit. If Rahul is 15 years old presently, determine the age (in years) of Sumit after 12 years.

A) 16	B) 15
C) 10	D) 17

Quantitative Aptitude - Arithmetic Ability Questions

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