Question

    Ravi deposits Rs. 8,240 on simple interest at 5% per annum

    for 4 years. If the total amount he gets back is Rs. '2m', then find the product of the digits of 'm'.
    A 625 Correct Answer Incorrect Answer
    B 750 Correct Answer Incorrect Answer
    C 576 Correct Answer Incorrect Answer
    D 450 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Simple interest = Principal × Rate × Time ÷ 100

    Interest earned = 8,240 × 5 × 4 ÷ 100 = Rs. 1,648

    2m = 8,240 + 1,648

    Or, 2m = 9,888

    Or, m = 4,944

    Required product = 4 × 9 × 4 × 4 = 576

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