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    Question

    X invested Rs. x at 7% per annum simple interest for 5

    years and Y invested Rs. (x + 900) at 9% per annum simple interest for 1 year. If the total interest is Rs. 378, find x.
    A Rs.500 Correct Answer Incorrect Answer
    B Rs.550 Correct Answer Incorrect Answer
    C Rs.675 Correct Answer Incorrect Answer
    D Rs.525 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ:
    (x ├Ч 7 ├Ч 5)/100 + {(x + 900) ├Ч 9 ├Ч 1}/100 = 378
    35x + 9x + 8100 = 37800
    44x = 29700
    x = Rs. 675

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