Biology
Biology, 12.11.2019 03:31, dianaosorio33895

In 2013, the average time men in the united states could run a marathon was about four hours and 16 minutes. if a marathon is 26.2 miles, what was the average speed?

in the same year, the average finishing time for u. s. women was four hours and 41 minutes. what was the average speed in miles per hour?

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