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    Question

    The difference between the compound interest, compounded

    annually and simple interest on Rs. тАШPтАЩ at the rate of 15% p.a. for 2 years, is Rs. 90. If Rs. (P + 2000) is invested at the same rate p.a., then find the compound interest, compounded annually earned after 3 years.
    A Rs. 3812.5 Correct Answer Incorrect Answer
    B Rs. 2912 Correct Answer Incorrect Answer
    C Rs. 3125.25 Correct Answer Incorrect Answer
    D Rs. 3591 Correct Answer Incorrect Answer
    E Rs. 3355 Correct Answer Incorrect Answer

    Solution

    Using formula Difference = Sum(R/100)2 Or, 90 = P(15/100)2 Or, 90 = P(225/10000) Or, 0.0225P = 90 Or, P = 4000 Sum that is invested on compound interest = 4000 + 2000 = Rs. 6000 Compound interest = 6000 [1 + (15/100)3┬а] тАУ 6000 = 6000 ├Ч (23/20) ├Ч (23/20) ├Ч (23/20) тАУ 6000 = 9125.25 тАУ 6000 = Rs. 3125.25

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