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14 December, 11:39

Jeff takes 20 minutes to jog around the race course one time, and 30 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long?

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  1. 14 December, 13:56
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    7.2 average miles per hour

    Cross multiply to solve for x:

    6miles / 50 minutes = X (how many miles) / 60 minutes

    6*60=50x

    360=50x

    360/50 = x

    7.2 = x
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