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    Question

    The simple interest on a sum of money is 4/25 of the

    sum. If the number of years is numerically half the rate per annum, then find the rate percent per annum.
    A 5.7% Correct Answer Incorrect Answer
    B 8% Correct Answer Incorrect Answer
    C 6.9% Correct Answer Incorrect Answer
    D 9.5% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let P = 25 units and Simple Interest = 4 units T = R/2 SI = (P Ă— R Ă— T)/100 => 4 = (25 Ă— R Ă— R)/(100 Ă— 2) => R = 5.7%

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