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”.
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