Question
The difference between CI (annual) and SI on a certain
amount at 15% p.a. for 2 years is Rs. 450. Determine the amount.Solution
Let the sum = Rs. x x(1 + 15/100)² – x – x × 15% × 2 = 450 (115/100)² = 13225/10000 = 529/400 529x/400 – x – 3x/10 = 450 (529x/400 – 400x/400) – 120x/400 = 450 9x/400 = 450 x = Rs. 20000
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