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9 October, 04:41

Mrs. johnson is 5 times as old as her son. three years ago she was 8 times as old as her son was then. find each of their ages

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  1. 9 October, 08:35
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    Let age of son = x years and y = age of Mrs Johnson, then:-

    y = 5x

    and

    y - 3 = 8 (x - 3)

    plug y = 5x into the above:-

    5x - 3 = 8x - 24

    21 = 3x

    x = 7

    Sons age is 7 and Mrs Johnson's age is 35.
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