This set of Aptitude Questions and Answers (MCQs) focuses on “Rate Centered – Set 2”.
1. A man invested x rupees for 5 years at a rate of r% simple interest. If the amount he received after 5 years is 2.5x, find the rate percentage.
a) 33%
b) 32%
c) 31%
d) 30%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 2.5x – x = 1.5x
The rate = 1.5 * 100 / (x * 5) = 150 / 5 = 30%
2. A man invested x rupees for 5.4 years at a rate of r% simple interest. If the amount he received after 5.4 years is 1.25x, find the rate percentage.
a) 4.62%
b) 5%
c) 5.22%
d) 6%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 1.25x – x = 0.25x
The rate = 0.25 * 100 / (x * 5.4) = 25 / 5.4 = 4.62
3. A man invested x rupees for 1.5 years at a rate of r% simple interest. If the amount he received after 1.5 years is 1.95x, find the rate percentage.
a) 62%
b) 62.5%
c) 63.33%
d) 64.5%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 1.95x – x = 0.95x
The rate = 0.95 * 100 / (x * 1.5) = 95 / 1.5 = 63.33%
4. A man invested x rupees for 7 years at a rate of r% simple interest. If the amount he received after 7 years is 10x, find the rate percentage.
a) 128.62%
b) 128.57%
c) 136.32%
d) 123.77%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 10x – x = 9x
The rate = 9 * 100 / (x * 7) = 900 / 7 = 128.57 %
5. A man invested x rupees for 4 years at a rate of r% simple interest. If the amount he received after 4 years is 5.25x, find the rate percentage.
a) 104.80%
b) 106.25%
c) 108.35%
d) 110.50%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 5.25x – x = 4.25x
The rate = 4.25 * 100 / (x * 4) = 425 / 4 = 106.25%
6. A man invested x rupees for 3 years at a rate of r% simple interest. If the amount he received after 3 years is 1.27x, find the rate percentage.
a) 9%
b) 12%
c) 15%
d) 18%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 1.27x – x = 0.27x
The rate = 0.27 * 100 / (x * 3) = 27 / 3 = 9%
7. A man invested x rupees for 10.5 years at a rate of r% simple interest. If the amount he received after 10.5 years is 7.25x, find the rate percentage.
a) 59.52%
b) 50.27%
c) 51.25%
d) 52.20%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 7.25x – x = 6.25x
The rate = 6.25 * 100 / (x * 10.5) = 625 / 10.5 = 59.52%
8. A man invested x rupees for 6.5 years at a rate of r% simple interest. If the amount he received after 6.5 years is 5.65x, find the rate percentage.
a) 71.53%
b) 71.77%
c) 72.27%
d) 72.72%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 5.65x – x = 4.65x
The rate = 4.65 * 100 / (x * 6.5) = 465 / 6.5 = 71.53%
9. A man invested x rupees for 25 years at a rate of r% simple interest. If the amount he received after 25 years is 8x, find the rate percentage.
a) 345.34%
b) 350.47%
c) 355.45%
d) 357.14%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 8x – x = 7x
The rate = 25 * 100 / (x * 7) = 2500 / 7 = 357.14%
10. A man invested x rupees for 12 years at a rate of r% simple interest. If the amount he received after 12 years is 5.8x, find the rate percentage.
a) 38.5%
b) 40%
c) 43.5%
d) 50%
View Answer
Explanation: The rate = Interest * 100 / (amount invested * time)
The interest = amount received – the amount invested = 5.8x – x = 4.8x
The rate = 4.8 * 100 / (x * 12) = 480 / 12 = 40%
To practice all aptitude questions, please visit “1000+ Quantitative Aptitude Questions”, “1000+ Logical Reasoning Questions”, and “Data Interpretation Questions”.
