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13 November, 15:45

Jake and amber worm at McDonald's they each earn $8 per hour jake works three more hours then amber if jake and amber made a total of $120 how many hours did jake work?

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  1. 13 November, 18:39
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    9 hours

    Step-by-step explanation:

    Set up the equations: x is the amount of hours Amber worked and y is the hours Jake worked

    8x + 8y = 120

    y = 3 + x

    Substitute the second equation into the first

    8x + 8 (3+x) = 120

    Distribute

    8x + 24 + 8x = 120

    Combine like-terms

    16x + 24 = 120

    Subtract 24 on both sides

    16x = 96

    Divide 16 on both sides

    x = 6 (hours Amber worked)

    Plug in this x-value into on of the two equations. I will use the second

    y = 3 + 6

    y = 9
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