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9 October, 03:22

Marc was born on his grandmother's 56th birthday. In how many years will Marcs grandmother be 5 times as Marc will be then?

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  1. 9 October, 07:07
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    Therefore 70 year Marc's grandmother be 5 times of as Marc will be after (70-56) = 14 year.

    Step-by-step explanation:

    Given, Marc was born on his grandmother's 56th birthday.

    Let, x year will Marc's grandmother be 5 times as Marc will be then.

    At that time the age of Marc will be = (x-56) year

    According to the problem,

    x = 5 (x-56)

    ⇔x = 5x - 280

    ⇔x-5x = - 280

    ⇔-4x=-280

    ⇔x=70

    Therefore 70 year Marc's grandmother be 5 times of as Marc will be after (70-56) = 14 year.
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