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31 May, 18:03

mary goes running each day. in 3 hours she runs a total of 7 miles. how many miles does she run in 1 hour

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  1. 31 May, 20:48
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    Simply set up a proportion: hours/miles=hours/miles

    3/7=1/x.

    Cross multiply to get 3x=7. Divide by 3 to get 7/3.

    Therefore, Mary runs 7/3 miles in an hour.
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