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    Question

    What is A's present age, if after 17 years his age will

    be 10 times his age 10 years back?
    A 14 years Correct Answer Incorrect Answer
    B 13 years Correct Answer Incorrect Answer
    C 12.5 years Correct Answer Incorrect Answer
    D 16.5 years Correct Answer Incorrect Answer

    Solution

    Let A's present age be x. A's age 17 years ago = (x - 17) A's age after 10 years = (x + 10) According to question, =>(x + 17) = 10 (x тАУ 10) => x + 17 = 10x тАУ 100 => 9x = 117 => x = 13 years

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