6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If 15% of x is three times of 10% of y, then x:y =

A) 1:2	B) 2:1
C) 3:2	D) 2:3

Answer & Explanation Answer: B) 2:1

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

A does 50% of a work in 12 days. He then calls in B and they together finish the remaining work in 8 days. How long B alone would take to complete the whole work?

A) 12 days	B) 24 days
C) 36 days	D) 48 days

Answer & Explanation Answer: D) 48 days

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

The sum of length, breadth and height of a cuboid is 22 cm and the length of its diagonal is 14 cm.
What is the surface area of the cuboid?

A) 288 sq.cm	B) 216 sq.cm
C) 144 sq.cm	D) Cannot be determined due to insufficient data

Answer & Explanation Answer: A) 288 sq.cm

Explanation:

Let lengths, breadth and height of cuboid be l, b and h respectively

According to question

l+b+h = 22cm......(i)

and

√(l^2+b^2+h^2) = 14cm .....(ii)

Surface area of cuboid = 2(lb+bh+lh)

Squaring eq (i) gives

l^{2} + b^{2} + h^{2}

+ 2(lb+bh+lh) = 484

Substituting l^2+b^2+h^2 from eq (i)

2(lb+bh+lh) = 484 -196 = 288 sq.cm

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

40 men took a dip in a pool 30 m long and 25 m broad. If the average water displaced by a man is 5 cub.m, then what will be the rise (in cm) in level of the pool?

A) 25	B) 26.66
C) 27.33	D) 28.5

Answer & Explanation Answer: B) 26.66

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

A company, at the time of inflation reduced the staff in the ratio 5 : 3 and average salary per employee is increased in the ratio 7 : 8. By doing so, the company saved Rs 55000. What was the initial expenditure (in Rs) of company?

A) 155000	B) 160000
C) 175000	D) 215000

Answer & Explanation Answer: B) 160000

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

Calculate the value of $\frac{(61681 x 61681 - 31681 x 31681)}{30000}$

A) 93352	B) 94362
C) 93362	D) 95362

Answer & Explanation Answer: C) 93362

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If $A = \frac{0.216 + 0.008}{0.36 + 0.04 - 0.12} & B = \frac{0.729 - 0.027}{0.81 + 0.09 + 0.27}$ , then what is the value of ${(A^{2} + B^{2})}^{2}$ ?

A) 0.8	B) 1
C) 1.4	D) 2.2

Answer & Explanation Answer: B) 1

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Q:

The price of an article is cut by 33%, to restore to its original value, the new price must he increased by

A) 33 percent	B) 49.25 percent
C) 24.81 percent	D) 41.25 percent

Quantitative Aptitude - Arithmetic Ability Questions

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