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    Question

    What is A's present age, if after 15 years his age will

    be 10 times his age 12 years back?
    A 14 years Correct Answer Incorrect Answer
    B 7 years Correct Answer Incorrect Answer
    C 12 years Correct Answer Incorrect Answer
    D 15 years Correct Answer Incorrect Answer

    Solution

    Let A's present age be x. A's age 15 years ago = (x - 15) A's age after 12 years = (x + 12) According to question, =>(x + 15) = 10 (x тАУ 12) => x + 15 = 10x тАУ 120 => 9x = 135 => x = 15 years

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