SOLUTION: 40 miles in 5 hours. then 60 miles in 10 hours. then 40 miles in 20 hours.what was his averge speed for all three legs of the trip?

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Question 175258This question is from textbook algebra 1/2 an incremental development
: 40 miles in 5 hours. then 60 miles in 10 hours. then 40 miles in 20 hours.what was his averge speed for all three legs of the trip? This question is from textbook algebra 1/2 an incremental development

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
40 miles in 5 hours. then 60 miles in 10 hours. then 40 miles in 20 hours.what was his averge speed for all three legs of the trip?
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The total distance is 40 + 60 + 40 = 140 miles
The total time is 5 + 10 + 20 = 35 hours
140 miles/35 hours = 4 miles/hour, or 4 mph