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    Question

    A man invested certain sum at 10% p.a. simple interest

    for his son who was 17 years old. If the amount received by the son when he was 30 years old is Rs. 13200, then find the sum invested by the man.
    A Rs. 6500 Correct Answer Incorrect Answer
    B Rs. 6200 Correct Answer Incorrect Answer
    C Rs. 6700 Correct Answer Incorrect Answer
    D Rs. 6000 Correct Answer Incorrect Answer

    Solution

    Let the sum invested by the man be Rs. x Time for which the sum is invested = 30 – 17 = 13 years According to the question, {(x × 10 × 13)/100} + x = 13200 Or, 2.2x = 13200 Or, x = 6000 Therefore, the sum invested by the man = Rs. 6000

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