Posted by **kai** on Tuesday, March 22, 2011 at 6:35pm.

a cyclist bikes over a path at 10 miles per hour. he returns over the same path at * miles per hour. what was his average speed for the round trip.((please explain how to do this)

- mathematics -
**Ms. Sue**, Tuesday, March 22, 2011 at 6:38pm
(10 + x)/2

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