Question
The difference between compound and simple interest on a
sum of money for 2 years at 5% per annum is Rs. 664. The sum is:Solution
Difference of compound interest and simple interest for 2 years = P(R/100)2 = P (5/100)2 ⇒  664 = P (1/400) ⇒  P = 664 × 400 = Rs. 2,65,600
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