SOLUTION: a runner goes a distance of 7.2 miles in 1 hour and 10 minutes. What was the average speed in mph?

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Question 417320: a runner goes a distance of 7.2 miles in 1 hour and 10 minutes. What was the average speed in mph?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
7.2 miles in 1 h 10 m
7.2 = 7 2/10 = 7 1/5 = 36/5 miles
1h 10 m = 1 10/60 = 1 1/6 hours = 7/6 hours
..
7/6 h --------------- 36/5 miles
1 hour ---------------- ?
(36/5) / (7/6)
36/5 * 6/7
6.17 mph