6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ?

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

Answer & Explanation Answer: C) 2:3

Explanation:

Let p be the principle amount

And R% be the rate of interest

Then, required ratio = $(\frac{\frac{P \times 4 \times R}{100}}{\frac{P \times 6 \times R}{100}})$

$\Rightarrow \frac{4 P R}{6 P R}$ = 2:3

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Filed Under: Simple Interest
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2 3151

Q:

Suresh starts working as a analyst on an annual salary of Rs. 160000. If he receives a 15% pay-rise each year, the number of years he has worked for the company, when his annual salary became Rs. 279841 is

A) 3.5 yrs	B) 4 yrs
C) 4.5 yrs	D) 5 yrs

Answer & Explanation Answer: B) 4 yrs

Explanation:

From the given data in the question,

$279841 = 160000 x {(1 + \frac{15}{100})}^{t} \frac{279841}{160000} = {(\frac{115}{100})}^{t}$

t = 4 years.

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Filed Under: Percentage
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6 3147

Q:

A text book of mathematics cost 2 Rs/- more than a text book of literature. If 5 literature books cost 38 Rs/- more than 3 mathematics books, what is the cost of each literature book?

A) 44	B) 22
C) 24	D) 11

Answer & Explanation Answer: B) 22

Explanation:

Let each literature text book cost be Rs. X

Then, cost of mathematics text book = Rs. (X + 2)

ATQ,

5X = 38 + 3(X + 2)

5X = 38 + 3X + 6

2X = 44

X = 22.

Therefore, cost of each literature text book = Rs. X = Rs. 22.

And that of masthematics = X + 2 = Rs. 24.

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Filed Under: Problems on Numbers
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3 3145

Q:

Example:$800 is invested at 7% for 6 years.Find the interest compounded anually?

A) 400.58	B) 300.58
C) 200.58	D) 100.58

Answer & Explanation Answer: A) 400.58

Explanation:

M=P(1+i)^n

I=M-P

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
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0 3144

Q:

What is the value of $\sqrt{729} + \sqrt{72.9} + \sqrt{7.29}$

A) 30.5	B) 32.33
C) 35.6	D) 38.23

Answer & Explanation Answer: D) 38.23

Explanation:

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Filed Under: Square Roots and Cube Roots

8 3136

Q:

A drum contains 80 litres of ethanol. 20 litres of this liquid is removed and replaced with water. 20 litres of this mixture is again removed and replaced with water. How much water (in litres) is present in this drum now?

A) 45	B) 40
C) 35	D) 44

Answer & Explanation Answer: C) 35

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

0 3130

Q:

The ratio of the members of blue to red balls in abag is constant. When there were 44 red balls, the number of blue balls was 36. If the number of blue balls is 54, how many red balls will be in the bag?

A) 68	B) 32
C) 64	D) 66

Answer & Explanation Answer: D) 66

Explanation:

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Filed Under: Permutations and Combinations
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26 3129

Q:

25 divided by 7

A) 3.571	B) 35.71
C) 0.351	D) 0.0357

Answer & Explanation Answer: A) 3.571

Explanation:

Here we have 25 divided by 7.

25 will not go directly in 7

Hence, we get the result in decimals.

25/7 = 3.571.

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Filed Under: Numbers
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4 3129

Quantitative Aptitude - Arithmetic Ability Questions

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