The compound interest on a sum for 3 years at 5% is Rs. 788.125. The sum is: MCQ with Answer and Explanation

The compound interest on a sum for 3 years at 5% is Rs. 788.125. The sum is:
A. Rs. 5000
B. Rs. 4500
C. Rs. 6000
D. Rs. 5500
Answer: Option A
Solution (By JKExamLibrary)
CI = P[(1.05)³ − 1] = P × 0.157625 = 788.125 ⇒ P = 788.125 / 0.157625 = 5000.

This question belongs to: Maths Compound Interest

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Practice More Compound Interest Questions

Question #1 Report Error
In how many years will Rs. 1500 amount to Rs. 1815 at 10% per annum compound interest?
A. 2 years
B. 3 years
C. 2.5 years
D. 1.5 years

Correct Answer: Option A


Explanation:
1500(1.1)^t = 1815 ⇒ (1.1)^t = 1.21 ⇒ t = 2.

This question belongs to: Maths Compound Interest
Question #2 Report Error
A sum of money placed at compound interest becomes double of itself in 6 years. In how many years will it become 8 times of itself?
A. 24 years
B. 30 years
C. 18 years
D. 12 years

Correct Answer: Option C


Explanation:
The sum becomes 2^1 times in 6 years. It will become 8 (2^3) times in 3 * 6 = 18 years.

This question belongs to: Maths Compound Interest
Question #3 Report Error
The effective rate of interest for 4% per annum compounded half-yearly is:
A. 4.04%
B. 4.08%
C. 4.16%
D. 4.20%

Correct Answer: Option A


Explanation:
Effective = (1.02)² − 1 = 1.0404 − 1 = 4.04%.

This question belongs to: Maths Compound Interest