Question
A man invested Rs. 8,000 at simple interest of 'x%' p.a.
and received Rs. 16,000 after 2 years. If he had invested Rs. 24,000 at simple interest of 'x%' p.a. for 3 years, then find the interest earned by him from this investmentSolution
Total interest earned in 2 years = 16000 - 8000 = Rs. 8,000 ATQ; 8000 = (8000 × x × 2) ÷ 100 Or, x = 50 So, required interest earned = (24,000 × 50 × 3) ÷ 100 = Rs. 36000
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