SOLUTION: a person biking uphill travels 15 miles in an hour. The same person biking downhill travels 15 miles in 1/2 hour. What is this persons average speed?

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Question 930404: a person biking uphill travels 15 miles in an hour. The same person biking downhill travels 15 miles in 1/2 hour. What is this persons average speed?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
a person biking uphill travels 15 miles in an hour. The same person biking downhill travels 15 miles in 1/2 hour. What is this persons average speed?
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He travels 30 miles in 1.5 hours.