Question
A man invested Rs. 16,000 at simple interest of 'x%'
p.a. and received Rs. 32,000 after 2 years. If he had invested Rs. 21,000 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 = 32000 - 16000 = Rs. 16000 ATQ; 16000 = (16000 × x × 2) ÷ 100 Or, x = 50 So, required interest earned = (21,000 × 50 × 3) ÷ 100 = Rs. 31500
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