Find the compound interest on Rs. 19600 at 10% per annum for 2 years. MCQ with Answer and Explanation

Find the compound interest on Rs. 19600 at 10% per annum for 2 years.

A. Rs. 4312

B. Rs. 3920

C. Rs. 4116

D. Rs. 4508

Answer: Option C

A = 19600 × 1.21 = 23716, CI = 23716 − 19600 = Rs. 4116.

This question belongs to: Maths Compound Interest

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Question #1 Report Error

A sum of money at compound interest triples in 7 years. In how many years will it become 27 times?

A. 28 years

B. 14 years

C. 21 years

D. 18 years

Correct Answer: Option C

Explanation:
27 = 3³, so 7 × 3 = 21 years.

This question belongs to: Maths Compound Interest

Question #2 Report Error

The difference between compound interest and simple interest on a sum for 2 years at 10% is Rs. 50. The sum is:

A. Rs. 4500

B. Rs. 5000

C. Rs. 6000

D. Rs. 5500

Correct Answer: Option B

Explanation:
D = P × (10/100)² = P × 0.01 = 50 ⇒ P = 5000.

This question belongs to: Maths Compound Interest

Question #3 Report Error

The population of a village increases at 5% per annum. If the present population is 4410, what was it 2 years ago?

A. 3900

B. 4000

C. 4100

D. 3800

Correct Answer: Option B

Explanation:
Population 2 years ago = 4410 / (1.05)² = 4410 / 1.1025 = 4000.

This question belongs to: Maths Compound Interest