6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of $\frac{\sqrt{96} + \sqrt{216}}{\sqrt{24}}$ ?

A) 8	B) 4
C) 5	D) 10

Answer & Explanation Answer: C) 5

Explanation:

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Filed Under: Simplification
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Q:

ΔDEF is right angled at E. If cosD = 8/17, then what is the value of secF ?

A) 17/8	B) 8/17
C) 17/15	D) 15/17

Answer & Explanation Answer: C) 17/15

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Q:

The sum of 4x + 3y 7z, x y z and 2x 3y + 4z is

A) 3x - y - 4z	B) 3x - y + 4z
C) 3x + y - 4z	D) 3x + y + 4z

Answer & Explanation Answer: A) 3x - y - 4z

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Q:

Which of the following quadratic equations has real roots?

A) 4x2 - 9x + 6 = 0	B) 3x2 - 2x + 6 = 0
C) 2x2 - 7x + 6 = 0	D) x2 - 2x + 2 = 0

Answer & Explanation Answer: C) 2x2 - 7x + 6 = 0

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Q:

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

A) 80°	B) 40°
C) 90°	D) 50°

Answer & Explanation Answer: C) 90°

Explanation:

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Filed Under: Area
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Q:

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is:-

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

Answer & Explanation Answer: B) 2:3

Explanation:

Let the ratio be x : y
Total boys = 16.4 X x
Total girls = 15.4 X y
Total number of students in class = 16.4x + 15.4y
The average age of all students is 15.8
The total age of boys is 15.8x
The total age of girls is 15.8y
16.4x + 15.4y = 15.8x + 15.8y
0.6 x = 0.4 y
x/y = 0.4/0.6 = 2/3

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Filed Under: Ratios and Proportions
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Q:

X can finish 25% of a work in a day. Y can do 12.5% of the same work in a day. In how many days, will both of them finish the work together?

A) 2.67 days	B) 2.33 days
C) 3.33 days	D) 3.67 days

Answer & Explanation Answer: A) 2.67 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Arun and Amit can do a piece of work in 9 days and 12 days respectively. If they work for alternate days and Amit starts the work first, then in how many days 35/36 parts of whole work will be completed?

A) 10 days	B) 12 days
C) 5 days	D) 8 days

Quantitative Aptitude - Arithmetic Ability Questions

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