SOLUTION: A jogger runs east on a 4 mile trail for one hour. He then runs back on the same trail for 1.75 hours. What was his average speed?

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Question 1097340: A jogger runs east on a 4 mile trail for one hour. He then runs back on the same trail for 1.75 hours. What was his average speed?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A jogger runs east on a 4 mile trail for one hour. He then runs back on the same trail for 1.75 hours. What was his average speed?
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No distances are given.
It's not stated that he gets back to where he started.
--> not enough info to solve.