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1 October, 01:47

Efren leaves home at 9:00 A. M. and walks 4 miles per hour. His brother, Gregory, leaves half and hour later and runs 8.5 miles per hour in the same direction as Efren. Predict the time at which Gregory will catch up to Efren.

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  1. 1 October, 02:09
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    Y=4x+30

    y=8.5x

    It will be about 26 2/3 hours.
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