This set of Aptitude Questions and Answers (MCQs) focuses on “Time Centered”.

1. A man invested x rupees for y years at a rate of 5.7% simple interest. If he received 1.25x rupees after y years, find the value of y.

a) 4.38

b) 4.75

c) 4.65

d) 4.57

View Answer

Explanation: The amount he received = x + the interest he received = x + x * y * 5.7 / 100 = x + 0.057xy = 1.25x

X + 0.057xy = 1.25x, 0.057xy = 0.25x, 0.057y = 0.25, y = 0.25 / 0.057 = 4.38

2. A man invested x rupees for y years at a rate of 20% per annum simple interest. If he received 4.7x after y years, find the value of y.

a) 18

b) 18.5

c) 19

d) 19.5

View Answer

Explanation: The value of y = The interest percentage he received / the rate of interest

The interest he received = 4.7x – x = 3.7x = 370% of x

The rate of interest = 20%

Y = 370 / 20 = 18.5

3. A man invested x rupees for y years at a rate of 17% per annum simple interest. If he received 8.2x after y years, find the value of y.

a) 45.72

b) 45.27

c) 42.35

d) 42.53

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 8.2x – x = 7.2x = 720% of the amount invested.

The rate of interest = 17%

The value of y = 720 / 17 = 42.35

4. A man invested x rupees for y years at a rate of 28% per annum simple interest. If he received 6.6x after y years, find the value of y.

a) 12

b) 16

c) 18

d) 20

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 6.6x – x = 5.6x = 560% of the amount invested.

The rate of interest = 28%

The value of y = 560 / 28 = 20

5. A man invested x rupees for y years at a rate of 33% per annum simple interest. If he received 6.61x after y years, find the value of y.

a) 15

b) 17

c) 19

d) 23

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 6.61 – x = 5.61x = 561% of the amount invested.

The rate of interest = 33%

The value of y = 561 / 33 = 17

6. A man invested x rupees for y years at a rate of 83% per annum simple interest. If he received 15.11x after y years, find the value of y.

a) 15

b) 17

c) 19

d) 21

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 15.11x – x = 14.11x = 1411% of the amount invested.

The rate of interest = 83%

The value of y = 1411 / 83 = 17

7. A man invested x rupees for y years at a rate of 18% per annum simple interest. If he received 7.66x after y years, find the value of y.

a) 35

b) 37

c) 39

d) 43

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 7.66x – x = 6.66x = 666% of the amount invested.

The rate of interest = 18%

The value of y = 666 / 18 = 37

8. A man invested x rupees for y years at a rate of 7.5% per annum simple interest. If he received 2.71x after y years, find the value of y.

a) 21.7

b) 22.8

c) 23.9

d) 25

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 2.71x – x = 1.71x = 171% of the amount invested.

The rate of interest = 7.5%

The value of y = 171 / 7.5 = 22.8

9. A man invested x rupees for y years at a rate of 13.8% per annum simple interest. If he received 2.0764x after y years, find the value of y.

a) 7.8

b) 8.2

c) 8.6

d) 9.0

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 2.0764x – x = 1.0764x = 107.64% of the amount invested.

The rate of interest = 13.8%

The value of y = 107.64 / 13.8 = 7.8

10. A man invested x rupees for y years at a rate of 15% per annum simple interest. If he received 1.57x after y years, find the value of y.

a) 2.8

b) 3.2

c) 3.8

d) 4.4

View Answer

Explanation: The value of y = The interest percentage / the rate of interest

The interest received = 1.57x – x = 0.57x = 57% of the amount invested.

The rate of interest = 15%

The value of y = 57 / 15 = 3.8

To practice all aptitude questions, please visit “1000+ Quantitative Aptitude Questions”, “1000+ Logical Reasoning Questions”, and “Data Interpretation Questions”.