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31 August, 01:57

Isobel and marnie volunteer at a daycare center Isobel works 3 hours for every 2 hours marine works. if the two girls together work 20 hours on month, how many hours does Isobel work?

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  1. 31 August, 04:32
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    I=1.5m

    m+1.5m=20

    2.5m=20

    m=8

    20-8=12

    Isobel worked 12 hours.
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