What is the compound interest on Rs. 40000 for 1 year at 20% per annum, compounded half-yearly? MCQ with Answer and Explanation

What is the compound interest on Rs. 40000 for 1 year at 20% per annum, compounded half-yearly?
A. Rs. 8400
B. Rs. 8800
C. Rs. 8000
D. Rs. 8600
Answer: Option A
Solution (By JKExamLibrary)
Half-yearly rate = 20/2 = 10%. Time = 2 half-years. Amount = 40000 * (1 + 10/100)^2 = 40000 * 1.21 = Rs. 48400. Compound Interest = 48400 - 40000 = Rs. 8400.

This question belongs to: Maths Compound Interest

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Practice More Compound Interest Questions

Question #1 Report Error
The compound interest on Rs. 3000 at 5% per annum for 3 years is:
A. Rs. 478.00
B. Rs. 472.50
C. Rs. 475.00
D. Rs. 472.875

Correct Answer: Option D


Explanation:
A = 3000 × (1.05)³ = 3000 × 1.157625 = 3472.875, CI = 3472.875 − 3000 = Rs. 472.875.

This question belongs to: Maths Compound Interest
Question #2 Report Error
What sum will amount to Rs. 2420 in 2 years at 10% per annum compound interest?
A. Rs. 1900
B. Rs. 1800
C. Rs. 2100
D. Rs. 2000

Correct Answer: Option D


Explanation:
P = 2420 / (1.1)² = 2420 / 1.21 = 2000.

This question belongs to: Maths Compound Interest
Question #3 Report Error
A sum of money at compound interest becomes 9 times in 4 years. In how many years will it become 81 times?
A. 7 years
B. 6 years
C. 8 years
D. 10 years

Correct Answer: Option C


Explanation:
81 = 9², so 4 × 2 = 8 years.

This question belongs to: Maths Compound Interest