SOLUTION: Peter cycled to town at a speed of 20km/hr. he left his bicycle at the repair shop and ran back home at a speed of 10km/hr. what was his average speed for the whole trip?

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Question 29861: Peter cycled to town at a speed of 20km/hr. he left his bicycle at the repair shop and ran back home at a speed of 10km/hr. what was his average speed for the whole trip?
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
you are missing something here. How far is it to the store? does it say how long it took him to go there and back? You need one of these to accurately work the problem.