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16 October, 17:29

John is twice as old as Bill. Greg is 7 years older than Bill. Four years ago, the sum of their ages was 55. How old is Greg?

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  1. 16 October, 17:53
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    Greg is 67 years old.

    Step-by-step explanation:

    John = 2 * B

    G = 7 + B

    J - 4 + B - 4 + G - 4 = 55

    J + B + G = 67

    2B + B + 7 + B = 67

    4B = 60

    B = 15

    J = 30

    G = 22

    30 + 15 + 22 = 67

    67 = 67

    - I. A -
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