SOLUTION: A car goes 40mph to town and 45 mph back home in 4 hrs what is the miles travelled?

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Question 789587: A car goes 40mph to town and 45 mph back home in 4 hrs what is the miles travelled?

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A car goes 40mph to town and 45 mph back home in 4 hrs what is the miles travelled?
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average speed = 2*40*45/(40+45) = 720/17 mi/hr
d = r*t = 4*720/17 round trip
d =~ 169.41 miles