At simple interest, a sum becomes three times itself in 10 years. What is the rate of interest per annum?

A. 15%

B. 20%

C. 25%

D. 30%

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cgl Save WhatsApp Report

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Answer: B. 20%

Answer: (B) 20%

Three times means the interest is 2 × P, i.e. 200% in 10 years. Rate = 200 ÷ 10 = 20%.

Trap: 30% uses 300% instead of the 200% interest.

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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