6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Ravi invested Rs.P in a scheme A offering simple interest at 10% p.a. for two years. He invested the whole amount he received from scheme A, in another scheme (B) offering simple interest at 12% p.a. for five years. If the difference between the interests earned from schemes A and B was Rs. 13,00/, what is the value of P ?

A) 2500	B) 2000
C) 3000	D) 3500

Answer & Explanation Answer: A) 2500

Explanation:

It is given that the initial amount invested in scheme A is Rs P at 10%per Annum S.I. =PTR/100 = P x 10 x 2/100 Now the total amount after 2 years is = 1.2P New Rate of interest = 12% per annum Time = 5 years S.I for next 5 years when new principal amount is 1.2 P = 1.2Px12x5/100 = 0.72P Total amount after 5 years at 12% per annun = 1.72P Given that 1.72P - 1.2P = 1300 P = 1300/0.52 P = Rs. 2500

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Filed Under: Simple Interest

2 2397

Q:

If A = (-14 + 4) and B = 4 - 14, then AB =

A) 0	B) -100
C) 100	D) -1

Answer & Explanation Answer: C) 100

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If ${(x / y)}^{a - 4} = {(y / x)}^{2 a - 5}$ , then what is the relation between x and y?

A) x > y	B) Cannot be determined
C) x < y	D) x = y

Answer & Explanation Answer: B) Cannot be determined

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If sinC - sinD = x, then value of x is

A) 2sin[(C+D)/2]cos[(C-D)/2]	B) 2cos[(C+D)/2]cos[(C-D)/2]
C) 2cos[(C+D)/2]sin[(C-D)/2]	D) 2sin[(C+D)/2]sin[(D-C)/2]

Answer & Explanation Answer: C) 2cos[(C+D)/2]sin[(C-D)/2]

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead of 26. what is the correct average?

A) 33.1	B) 33.3
C) 33.5	D) 33.7

Answer & Explanation Answer: A) 33.1

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

If a vendor sells a coconut at Rs 24 he makes 20% loss. If he sells at Rs 36 then what is his profit percentage?

A) 10	B) 20
C) 30	D) 40

Answer & Explanation Answer: B) 20

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

A complete factorisation of $x^{4} + 64$ is

A) (x2 + 8)2	B) (x2 + 8)(x2 - 8)
C) (x2 - 4x + 8)(x2 -4x - 8)	D) (x2 + 4x + 8)(x2 - 4x + 8)

Answer & Explanation Answer: D) (x2 + 4x + 8)(x2 - 4x + 8)

Explanation:

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Q:

Find k, if the line 2x- 3y = 11 is perpendicular to the line 3x + ky = -4?

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

Quantitative Aptitude - Arithmetic Ability Questions

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