A sum at simple interest amounts to ₹9,800 in 5 years and to ₹12,005 in 8 years. What is the rate of interest per annum?

A. 10%

B. 11%

C. 15%

D. 12%

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

1 answer

Best answer

Answer: D. 12%

Answer: (D) 12%

Interest for 3 years = 12,005 − 9,800 = ₹2205, so 1 year's interest = ₹735.

Principal = 9,800 − 5 × 735 = ₹6125. Rate = \(\frac{735}{6125} \times 100 = 12\%\).

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

Was this answer helpful?