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16 October, 18:36

Greg is 22 years older than his sister linda. In 3 years he will be twice as old as linda. How old is each of them now?

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  1. 16 October, 19:00
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    G = L + 22 ... eqn 1

    G = 2L+3 ... eqn 2

    Subst for G in eqn 2

    L+22 = 2L + 3

    L = 19

    G = 22
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