At what rate percent per annum will Rs. 10000 amount to Rs. 12100 in 2 years, compound interest compounded annually? MCQ with Answer and Explanation

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At what rate percent per annum will Rs. 10000 amount to Rs. 12100 in 2 years, compound interest compounded annually?

A. 14%

B. 10%

C. 12%

D. 8%

Answer: Option B

Solution (By JKSSB Mock Tests)

Amount/Principal = 12100 / 10000 = (11 / 10)^2. Therefore, 1 + R/100 = 11/10 => R/100 = 1/10 => R = 10%.

This question belongs to: Maths Compound Interest

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Question #1

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The compound interest on a sum for 2 years at 6% is Rs. 370.80. The sum is:

A. Rs. 3000

B. Rs. 3200

C. Rs. 2800

D. Rs. 3400

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Correct Answer: Option A

Explanation:
CI = P × 0.1236 = 370.80 ⇒ P = 3000.

This question belongs to: Maths Compound Interest

Question #2

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The difference between CI and SI on Rs. 25000 for 2 years at 4% is:

A. Rs. 48

B. Rs. 44

C. Rs. 40

D. Rs. 36

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Correct Answer: Option C

Explanation:
D = 25000 × (0.04)² = 25000 × 0.0016 = Rs. 40.

This question belongs to: Maths Compound Interest

Question #3

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Find the compound interest on Rs. 1800 at 10% per annum for 1 year compounded half-yearly.

A. Rs. 180

B. Rs. 184.50

C. Rs. 189

D. Rs. 190

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Correct Answer: Option B

Explanation:
Half-yearly rate 5%, n=2. A = 1800 × (1.05)² = 1800 × 1.1025 = 1984.50, CI = 1984.50 − 1800 = Rs. 184.50.

This question belongs to: Maths Compound Interest

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