SOLUTION: Helena drives from town A to town B at x mph, and drives back at y mph. What is her average speed for the round trip? If the round trip takes t hours, how far apart are the towns?

Question 570740: Helena drives from town A to town B at x mph, and drives back at y mph. What is her average speed for the round trip? If the round trip takes t hours, how far apart are the towns?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Average speed is always ( total distance traveled ) / ( total time it takes )
I will say that the towns are miles apart
----------
Time going from A to B:

Time going from B to A:

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Ave speed =
Divide top and bottom by
Ave speed =
Multiply top and bottom by
Ave speed =
---------------
If the round trip takes hrs,

Distance apart is
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