6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

In 250 litres mixture of soda and water the ratio of amount of soda to that of water is 7 : 18. In order to make this ratio 2 : 3, how many more litres of soda should be added?

A) 37.5	B) 42.5
C) 45	D) 50

Answer & Explanation Answer: D) 50

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

When a number is increased by 69, it becomes 103% of itself. What is the number?

A) 1300	B) 3300
C) 2300	D) 4300

Answer & Explanation Answer: C) 2300

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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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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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The area of a circle is 346.5 cm2. Find its circumference (in cm).

A) 132	B) 38
C) 66	D) 76

Answer & Explanation Answer: C) 66

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

1 1567

Q:

If the product of two numbers is 2646 and their LCM is 42 then their HCF is

A) 64	B) 26
C) 46	D) 63

Answer & Explanation Answer: D) 63

Explanation:

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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Q:

If A has got 20% more marks than B, then by what percent marks of B are less than the marks of A?

A) 16.66	B) 20
C) 33.33	D) 14.28

Answer & Explanation Answer: A) 16.66

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?

A) 4775.4	B) 5774.4
C) 4557.4	D) 5575.4

Answer & Explanation Answer: A) 4775.4

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

The ratio of present ages of L and N is 7 : 5. If the age of N after seven years will be 32 years, then what is the present age (in years) of L?

A) 49	B) 35
C) 28	D) 42

Quantitative Aptitude - Arithmetic Ability Questions

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