SOLUTION: A car travels 40 mph for 20 miles, 36mph for 24 miles, and 48 mph for 16 miles. What is its average speed?

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Question 122849: A car travels 40 mph for 20 miles, 36mph for 24 miles, and 48 mph for 16 miles. What is its average speed?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
40/20=2 hours.
36/24=1.5 hours.
48/16=3 hours.
total driving time=2+1.5+3=6.5 hours.
total mileage=40+36+48=124 miles/
124/6.5=19.1 mph is the average speed.