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3 September, 01:12

In 20 years charles will bevthree time as old as he is now. how old is he now?

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  1. 3 September, 02:43
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    10

    Explanation:

    Make our unknown equal to x, in this case his current age.

    In 20 years he will be three times as old as he is now, in other words:

    x + 20 = 3x

    Now solve the equation:

    20 = 3x - x

    20 = 2x

    10 = x
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