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22 June, 14:19

Jose starts with $250 and spends $25 a week. Martin starts with $30 and saves $30 a week. When do Jose and Martin have the

same amount of money? Use x for time and y for saving.

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  1. 22 June, 17:35
    0
    4 weeks, Jose and Martin will have the same amount of money in 4 weeks which is $150 each

    Step-by-step explanation:

    Jose:

    y = - 25x + 250

    Martin:

    y=30x+30

    Substitute x = 6 into the two equations

    Jose:

    y = - 25 (6) + 250

    = - 150+250

    y = 100

    Martin:

    y = 30 (6) + 30

    =180+30

    y = 2100

    Substitute x=4 into the two equations

    Jose:

    y = - 25 (4) + 250

    =-100+250

    y = 150

    Martin:

    y = 30 (4) + 30

    =120+30

    y = 150
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