6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

In a mixture of 25 litres, the ratio of milk to water is 4:1. Another 3 litres of water is added to the mixture. The ratio of milk to water in the new mixture is

A) 5:1	B) 5:2
C) 5:3	D) 5:4

Answer & Explanation Answer: B) 5:2

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

1 1501

Q:

$If rsin \emptyset = 1, rcos \emptyset = \sqrt 3, then the value of r^{2} \tan \emptyset is$

A) 4	B) 1/√3
C) 4/√3	D) 4√3

Answer & Explanation Answer: C) 4/√3

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

19 personswentto a hotel for a combineddinner party. 13 of them spent Rs 79 each on their dinner and the rest spent Rs 4 more than the average expenditure of all the 19. What was the total money spent by them?

A) 1628.4	B) 1534
C) 1492	D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

Let the average expenditure of 19 people be x

⇒19x = 13 X 79 + 6 X (x+4)⇒19x = 13 X 79 + 6x +24

⇒x = 80.84

So, total money spent by them = 1536.07

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Filed Under: Average
Exam Prep: Bank Exams

1 1501

Q:

A sum of money becomes 77/50 of itself in 18/5 years when invested at simple interest. What is the rate (in percentage) of interest per annum?

A) 20	B) 18
C) 12	D) 15

Answer & Explanation Answer: D) 15

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

3 1500

Q:

If √[(1 + cosA)/2] = x, then find the value of x.

A) sin(A/2)	B) tan(A/2)
C) cot(A/2)	D) cos(A/2)

Answer & Explanation Answer: D) cos(A/2)

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1500

Q:

What is the length of the side of an equilateral triangle, if its area is 36√3 sq cm?

A) 6 cm	B) 24 cm
C) 12 cm	D) 18 cm

Answer & Explanation Answer: C) 12 cm

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

0 1500

Q:

ax + 3y = 6 has slope -2/3. What is the value of a?

A) -2	B) 2
C) 3	D) -3

Answer & Explanation Answer: B) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1500

Q:

What is the slope of the line 2x - 5y = 12?

A) 2/5	B) 5/2
C) -2/5	D) -5/2

Quantitative Aptitude - Arithmetic Ability Questions

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