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17 December, 16:42

My mum was 27 when I was born. 8 years ago she was twice as old as I shall be in 5 years time. How old am I now?

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  1. 17 December, 19:21
    0
    Use timeline and work from NOW

    me. mom

    (1) @born 0. 27

    My mum was 27 when I was born.

    (2) now-8. x-8. y-8

    (3) now. x y

    (4) now+5. x+5. y+5

    (1) & (3). y-x = 27-0 = 27

    8 years ago she was twice as old as I shall be in 5 years time.

    (2) & (4). y-8 = 2 (x+5)

    2 variables 2 equations ... solve x

    x = 9, y = 36
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