SOLUTION: A truck with a heavy load drove from Boston to New York at a speed of 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was the average speed

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Question 1053029: A truck with a heavy load drove from Boston to New York at a speed of 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was the average speed for the whole trip?
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) About Me  (Show Source):
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A truck with a heavy load drove from Boston to New York at a speed of 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was the average speed for the whole trip?
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Avg = 2*40*60/(40+60) = 48 mi/hr

Answer by ikleyn(52769) About Me  (Show Source):