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19 May, 14:15

Mari and Jen each work 20 hours a week at different jobs. Mari earns twice as much as Jen. Together they earn $480. How much does each girl earn in a week

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  1. 19 May, 15:24
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    M=2j

    m+j=480

    Substitute 2j for m;

    2j+j=480

    3j=480

    j=160

    Jen earns $160 per week.

    m=2j

    m=2 (160)

    m=320

    Mari earns $320 per week.
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