6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

To cover a distance of 234 km in 1.6 hours what should be the average speed of the car in meters/second?

A) 40.625 m/s	B) 146.25 m/s
C) 73.125 m/s	D) 81.25 m/s

Answer & Explanation Answer: A) 40.625 m/s

Explanation:

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

A certain sum of money becomes 4 times of itself in 30 years at a rate of simple interest. In how many years it will become double of itself at the same rate of simple interest?

A) 20	B) 15
C) 10	D) 12

Answer & Explanation Answer: C) 10

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is

A) 35	B) 45
C) 55	D) 65

Answer & Explanation Answer: B) 45

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

The average of three numbers is 40. First number is 4/3 of the third number. If third number is 20 less than second number, then what is the value of second number?

A) 60	B) 50
C) 10	D) 20

Answer & Explanation Answer: B) 50

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

Reduce 2530/1430 to lowest terms.

A) 47/17	B) 23/13
C) 47/19	D) 29/17

Answer & Explanation Answer: B) 23/13

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?

A) 8	B) 9
C) 7	D) 6

Answer & Explanation Answer: B) 9

Explanation:

Number of students who took only Mathematics n(m) = 29
Number of students who took only biology n(b) = 32
Total number of students n(t) = 60
Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52
Total number of students who took both = 32 + 29 - 52 = 9

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

If $x^{1 / 4} + x^{- 1 / 4} = 2$ , then what is the value of $x^{81} + (1 / x^{81})$ ?

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

Answer & Explanation Answer: D) 2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If $5 \sin^{2} θ + 4 \cos^{2} θ = 9 / 2$ and 0 <θ<Π/2 then tanθ is equal to?

A) 1	B) 0
C) -1	D) 1/4

Quantitative Aptitude - Arithmetic Ability Questions

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