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17 March, 06:58

A plumber earns $15 per hour more than her apprentice. For a 40-hour week, their combined earnings are $2200. What is the hourly rate for each person?

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  1. 17 March, 07:10
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    Say the apprentice earns x dollars an hour, and the plumber earns x+15 dollars per hour. Write the equation:

    40 (x+x+15) = 2200

    Dividing by 40, we see that:

    2x+15=55

    Subtracting 15, we see that 2x=40, so x=20. As a result, the apprentice earns $20 an hour, and the plumber earns #35 per hour.
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