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

Question 178125: A car travels 40 mph for 20 miles, 36 mph for 24 miles, and 48 mph for 16 miles. what is its average speed?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The average speed is NOT the average of the averages
The average speed is (total distance)/(total time)
For the 3 parts od the trip,
(1)
(2)
(3)
given:
(1)
(2)
(3)
----------------------

hrs
and

Average speed =

mi/hr answer
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