At what rate percent will a sum of Rs. 4000 amount to Rs. 4410 in 2 years at compound interest? MCQ with Answer and Explanation

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At what rate percent will a sum of Rs. 4000 amount to Rs. 4410 in 2 years at compound interest?

A. 8%

B. 4%

C. 6%

D. 5%

Answer: Option D

Solution (By JKSSB Mock Tests)

4000(1+r)² = 4410 ⇒ (1+r)² = 1.1025 = (1.05)² ⇒ r = 5%.

This question belongs to: Maths Compound Interest

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Question #1

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A sum of money at compound interest doubles in 8 years. In how many years will it become 16 times?

A. 32 years

B. 40 years

C. 48 years

D. 24 years

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Correct Answer: Option A

Explanation:
Doubles in 8 years; 16 = 2⁴, so time = 8 × 4 = 32 years.

This question belongs to: Maths Compound Interest

Question #2

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The compound interest on Rs. 3700 at 10% per annum for 2 years is:

A. Rs. 814

B. Rs. 851

C. Rs. 777

D. Rs. 740

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Correct Answer: Option C

Explanation:
A = 3700 × 1.21 = 4477, CI = 4477 − 3700 = Rs. 777.

This question belongs to: Maths Compound Interest

Question #3

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What will be the compound interest on Rs. 7500 at 4% per annum for 2 years?

A. Rs. 616

B. Rs. 612

C. Rs. 624

D. Rs. 608

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Correct Answer: Option B

Explanation:
A = 7500 × (1.04)² = 7500 × 1.0816 = 8112, CI = 8112 − 7500 = Rs. 612.

This question belongs to: Maths Compound Interest

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