Question
CI (compounded yearly) exceeds SI on a sum for 2 years
at 8% p.a. by Rs. 160. Find the sum.Solution
Let the sum = Rs. x x(1 + 8/100)² – x – x × 8% × 2 = 160 (108/100)² = 11664/10000 = 729/625 So, 729x/625 – x – 4x/25 = 160 (729x/625 – 625x/625) – 100x/625 = 160 4x/625 = 160 x = Rs. 25000
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