The simple interest on a sum for 3.5 years at 11% per annum exceeds the simple interest on it for 2.5 years at 12% per annum by Rs. 680. What is the sum?
Correct answer B. Rs. 8,000
Explanation
Difference = P × (38.5 − 30) / 100 = 0.085P = 680, so P = Rs. 8,000. Here 11 × 3.5 = 38.5 and 12 × 2.5 = 30.
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