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17 May, 10:48

Bob is three years older than his brother. The sum of their ages is 33. How old is bob?

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  1. 17 May, 11:16
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    Let's make Bob "x".

    Brother: x - 3.

    x + x-3 = 33.

    Solve:

    x + x - 3 = 33.

    2x = 33 + 3.

    2x = 36.

    x = 18.

    Bob is 18.

    Brother is 18 - 3 = 15.
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