6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A Bus travels at the speed of 36 km/hr, then the distance covered by it in one second is

A) 10 m	B) 15 m
C) 12.5 m	D) 13.5 m

Answer & Explanation Answer: A) 10 m

Explanation:

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Q:

A can do a piece of work in 10 days and B in 12 days. With help of C, they finish the work in 4 days. In how many days C alone can do the same work?

A) 12	B) 15
C) 18	D) 24

Answer & Explanation Answer: B) 15

Explanation:

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Q:

A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the whole work?

A) 12.5 days	B) 100 days
C) 22.5 days	D) 35 days

Answer & Explanation Answer: B) 100 days

Explanation:

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Q:

In $∆ ABC,$ ∠B=35°, ∠C=65° and the bisector of ∠BAC meets BC in D. Then ADB is

A) 40°	B) 75°
C) 90°	D) 105°

Answer & Explanation Answer: D) 105°

Explanation:

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Q:

The area of the largest sphere ( in cm2) that can be drawn inside a square of side 18 cm is

A) 972Π	B) 11664Π
C) 36Π	D) 288Π

Answer & Explanation Answer: A) 972Π

Explanation:

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Filed Under: Area
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Q:

A man walks 1 km on 1st day , 2 km on 2nd day , 3 km on 3rd day and so on . The total distance the man covers in 10 days is

A) 40 Km	B) 50 Km
C) 55 Km	D) 58 Km

Answer & Explanation Answer: C) 55 Km

Explanation:

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Q:

If $\frac{a}{b + c} = \frac{b}{c + a} = \frac{C}{b + a}$ then which one of the following statements is correct?

A) Each fraction is equal to 1 or -1	B) Each fraction is equal to 1/2 or 1
C) Each fraction is equal to 1/2 or -1	D) Each fraction is equal to 1.2 only

Answer & Explanation Answer: C) Each fraction is equal to 1/2 or -1

Explanation:

a/(b+c) = b/(c+a) = c/(a+b)

Taking reciprocal and adding 1 to each ratio we get;

(b+c)/a + 1 = b/(c+a) + 1 = c/(a+b) + 1

Or (a+b+c)/a = (a+b+c)/b = (a+b+c)/c

So this can only be equal when a=b=c or a+b+c = 0

When a=b=c we get

a/(b+c)= ½When a+b+c = 0 we get

b+c = -a

So a/(b+c) = -1

So the ratios are ½ or -1

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Q:

A person scores 45% of the total marks in the exam and still fails by 40 marks. The passing percentage of the exam is 55%. What is the maximum marks of the exam?

A) 300	B) 400
C) 350	D) 550

Quantitative Aptitude - Arithmetic Ability Questions

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