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    Question

    A man invested a certain amount of sum at 12.5% per

    annum simple interest and earned an interest of Rs.2400 after 3 years. If the same amount is invested at 20% per annum compound interest, compounded annually for two years, then find the interest.
    A Rs.1512 Correct Answer Incorrect Answer
    B Rs.2816 Correct Answer Incorrect Answer
    C Rs.2464 Correct Answer Incorrect Answer
    D Rs.1760 Correct Answer Incorrect Answer

    Solution

    Let the certain sum of money be Rs.P. So,  P x 0.125 x 3 = 2400 => P = Rs.6400 Desired interest = [(1.2)2 – 1] x 5600 = Rs.2816

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