Question
The simple interest on Rs. 800 at R% per annum for 5 years is Rs. 200. Find the simple interest on Rs. 1200 at (R + 2)% per annum for 3 years.
Solution
According to question, 200 = 800 × R% × 5 R = 200/40 = 5 Therefore, required interest = 1200 × (5 + 2)% × 3 = Rs. 252
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