Question 1023982
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A truck driver traveled at an average speed of 64 miles per hour on a 200-mile trip to pick up a load of freight. 
On the return trip (with the truck fully loaded), the average speed was 35 miles per hour. Find the average speed for the round trip.
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See the lesson <A HREF=https://www.algebra.com/algebra/homework/word/travel/Calculating-an-average-speed.lesson>Calculating an average speed: a train going from A to B and back</A> in this site.


You will find the detailed solutions of similar problems there (Problems 1 and 2).