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3 March, 23:26

A window washer clean 38 windows in 2 hours at this rate how many windows did he clean in 7 hours?

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  1. 4 March, 00:27
    0
    Ok you wash 38 in 2 hours

    now multiply 38 by 3 and that's the total you wash in 6 hours

    (the 3 is the amount of 2 hour shifts total)

    finally divide 38 by 2 and then add that to the total you wash in 6 hours
  2. 4 March, 01:11
    0
    Proportion:

    38/2•x/7

    cross multiply:

    (7) (38) = 2x

    simplify:

    266=2x

    divide:

    x=133

    133 windows
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