SOLUTION: A truck driver traveled at an average speed of 45 miles per hour on a 100-mile trip to
pick up a load of freight. On the return trip (with the truck fully loaded), the average sp
Algebra.Com
Question 901599: A truck driver traveled at an average speed of 45 miles per hour on a 100-mile trip to
pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 80 miles per hour. What was the average speed for the round trip?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The time for the outbound trip is 
The time for the return trip is 
The average speed for the entire trip is the total distance divided by the total time:
Just do the arithmetic.
John
My calculator said it, I believe it, that settles it
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