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    Question

    The difference between the compound interest, compounded

    annually and simple interest on Rs. тАШPтАЩ at the rate of 30% p.a. for 2 years, is Rs. 180. If Rs. (P + 1000) is invested at the same rate p.a., then find the compound interest, compounded annually earned after 3 years.
    A Rs. 3591 Correct Answer Incorrect Answer
    B Rs. 3355 Correct Answer Incorrect Answer
    C Rs. 3050 Correct Answer Incorrect Answer
    D Rs. 3822 Correct Answer Incorrect Answer
    E Rs. 2548 Correct Answer Incorrect Answer

    Solution

    Using formula Difference = Sum(R/100)2 Or, 180 = P(30/100)2 Or, 180 = P(900/10000) Or, 0.0900P = 180 Or, P = 2000 Sum that is invested on compound interest = 2000 + 1000 = Rs. 3000 Compound interest = 3000(1 + 30/100)3 тАУ 3000 = 3000 ├Ч (13/10) ├Ч (13/10) ├Ч (13/10) тАУ 3000 = 6591 тАУ 3000 = Rs. 3591

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