6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The sum of ages of Ram and his son is 48. If his uncle's age is also included the average becomes 40. What is the age of Ram's uncle?

A) 48	B) 50
C) 72	D) 34

Answer & Explanation Answer: C) 72

Explanation:

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

On a certain item profit is 120%. If the cost price increases by 10% then what will be the new profit margin (in %) if selling price remains the same?

A) 50	B) 60
C) 100	D) 90

Answer & Explanation Answer: C) 100

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 2387

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 2386

Q:

The central Government granted a certain sum towards flood relief to 3 states A, B and C in the ratio 2 : 3 : 4. If C gets Rs. 400 Crores more than A, what is the share of B?

A) Rs. 400 crore	B) Rs. 200 crore
C) Rs. 600 crore	D) Rs. 300 crore

Answer & Explanation Answer: C) Rs. 600 crore

Explanation:

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Filed Under: Partnership
Exam Prep: Bank Exams

5 2385

Q:

If $27^{x} + 27^{[x - (1 / 3)]}$ = 972, then what is the value of x?

A) 2	B) 3
C) 4	D) 5

Answer & Explanation Answer: A) 2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Two cars A and B travel from one city to another, at speeds of 72 km/hr and 90 km/hr respectively. If car B takes 1 hour lesser than car A for the journey, then what is the distance (in km) between the two cities?

A) 270	B) 360
C) 240	D) 400

Answer & Explanation Answer: B) 360

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Filed Under: Time and Distance
Exam Prep: Bank Exams

2 2381

Q:

In the given figure, 3 semicircles are drawn on three sides of triangle ABC. Ab = 21 cm, BC = 28 cm and AC = 35 cm. What is the area (in sq.cm) of the shaded part?