A sum of money doubles itself in 10 years at simple interest. The rate of interest is MCQ with Answer and Explanation

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A sum of money doubles itself in 10 years at simple interest. The rate of interest is

A. 10%

B. 12%

C. 8%

D. 15%

Answer: Option A

Solution (By JKSSB Mock Tests)

SI = Principal. R = (100 × 100)/(P × 10) × P = 10%.

This question belongs to: Maths Simple Interest

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Practice More Simple Interest Questions

Question #1

Simple interest on Rs. 55000 for 3 years at 8% per annum is

A. Rs. 13400

B. Rs. 13200

C. Rs. 13600

D. Rs. 13000

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Correct Answer: Option B

Explanation:
SI = (55000 × 8 × 3)/100 = 13200.

This question belongs to: Maths Simple Interest

Question #2

Simple interest on Rs. 2259000 for 3 years at 55% per annum is

A. Rs. 3727550

B. Rs. 3727750

C. Rs. 3727350

D. Rs. 3727150

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Correct Answer: Option C

Explanation:
SI = (2259000 × 55 × 3)/100 = 3727350.

This question belongs to: Maths Simple Interest

Question #3

The principal that gives Rs. 2293200 interest in 8 years at 17% SI is

A. Rs. 1687500

B. Rs. 1685500

C. Rs. 1686500

D. Rs. 1688500

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Correct Answer: Option A

Explanation:
P = (2293200 × 100)/(17 × 8) = 1687500.

This question belongs to: Maths Simple Interest

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