6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?

A) 7 hrs	B) 13 hrs
C) 5 hrs	D) 10 hrs

Answer & Explanation Answer: D) 10 hrs

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Q:

If R = 97 and S = 155.2, then S is how much percentage more than R?

A) 60	B) 37.2
C) 58.4	D) 48

Answer & Explanation Answer: A) 60

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Q:

If x - y = -6 and x + y = 16, then $x^{2} - y^{2}$ is?

A) 96	B) -96
C) 22	D) -22

Answer & Explanation Answer: B) -96

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Q:

$\cot^{3} A$ is equal to

A) 3cotA - cot3A(1 - 3cot2A)	B) 3cotA + cot3A(1 - 3cot2A)
C) 3cotA - cot3A(1 + 3cot2A)	D) 3cotA + cot3A(1 + 3cot2A)

Answer & Explanation Answer: A) 3cotA - cot3A(1 - 3cot2A)

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Q:

X and Y give an exam. Difference of their marks is 45 and the difference of their marks is 15% of the maximum marks. What is the maximum marks for the exam?

A) 180	B) 450
C) 150	D) 300

Answer & Explanation Answer: D) 300

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Q:

If x - y = 6 and xy = 40, then find $x^{2} + y^{2}$ ?

A) 116	B) 80
C) 89	D) 146

Answer & Explanation Answer: A) 116

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Q:

If $\frac{a}{b} + \frac{b}{a} = 1,$ then the value of $a^{3} + b^{3}$ is

A) 1	B) 0
C) -1	D) 2

Answer & Explanation Answer: B) 0

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Q:

A bag has Rs 20 in the form of 1-rupee, 50-paise and 10-paise coins in the ratio of 2:3:5. Find the number of 50-paise coins.

A) 25	B) 10
C) 15	D) 5

Quantitative Aptitude - Arithmetic Ability Questions

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