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27 November, 18:35

Mr. Goldstein is 4 times as old as his daughter Anna. In 4 years, he will be 3 times as old as Anna. How old is Anna now?

I know the answer just how did you get your answer?

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  1. 27 November, 19:29
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    Lets Anna's age = A

    Mr. Goldstein age = G

    Mr. Goldstein is 4 times as old as his daughter Anna.

    So G = 4A

    In 4 years, he will be 3 times as old as Anna

    we add 4 with Both their ages

    G + 4 = three times of A + 4

    G + 4 = 3 (A + 4)

    We know G = 4A, replace it in above equation

    4A + 4 = 3 (A + 4)

    4A + 4 = 3A + 12

    Subtract 3A from both sides

    A + 4 = 12

    Subtract 4 from both sides

    A = 8

    So Anna's age = 8 years
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