Question
A man deposited Rs. 22000 at 10% compound interest,
compounded annually while Rs. 21500 at 12% simple interest per annum. What will be the difference between the compound interest and the simple interest earned by him after 3 years?Solution
Compound interest earned by the man in 3 years = 22000 Γ {(1 + 10/100)3 β 1)} = 22000 Γ 0.331 = Rs. 7282 Simple interest earned by the man in 3 years = 21500 Γ 0.13 Γ 3 = Rs. 7740 Required difference = 7740 β 7282 = Rs. 458
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