SOLUTION: mary drove 138 miles one way to visit her mother which took 2 1/2 hours. The return trip took 3 1/4 hours due to more traffic. what was her average speed for the entire trip
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Question 736501: mary drove 138 miles one way to visit her mother which took 2 1/2 hours. The return trip took 3 1/4 hours due to more traffic. what was her average speed for the entire trip
You can put this solution on YOUR website! mary drove 138 miles one way to visit her mother which took 2 1/2 hours.
The return trip took 3 1/4 hours due to more traffic.
what was her average speed for the entire trip
:
Let a = average speed for the whole trip, total distance/total time.
The round trip = 2(138) = 276 mi
total time for the trip: 2.5 + 3.25 = 5.75 hrs
:
a =
a = 48 mph
