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25 January, 09:58

Mrs. Johnson is 3 times as old as her son. Ten years ago she was 5 times as old as her son was then. Find each of their ages

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  1. 25 January, 10:26
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    her son is 20, Mrs. Johnson is 60

    Step-by-step explanation:

    if her son is x, Mrs. Johnson is 3x,

    Ten years ago,

    her son is x-10, Mrs. Johnson is 3x-10,

    so:

    3x-10=5 (x-10)

    x=20
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