SOLUTION: a car traveled at 50 km/h for 4 hours and at 60 km/h for 3 1/2 hours. what was the average speed for the whole journey???

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Question 937763: a car traveled at 50 km/h for 4 hours and at 60 km/h for 3 1/2 hours. what was the average speed for the whole journey???
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
a car traveled at 50 km/h for 4 hours and at 60 km/h for 3 1/2 hours.
what was the average speed for the whole journey???
:
Average speed is total dist/total time
Find the total distance
4(50) + 3.5(60) = 410
:
410%2F%284%2B3.5%29 = 542%2F3 mph