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

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Question 557375: A car traveled at 50km/hr for 4 hours and at 60km/hr for 3 1/2hours. 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 50km/hr for 4 hours and at 60km/hr for 3 1/2hours. What was the average speed for the whole journey?
:
Average speed = total distance/total time
:
a = %28%2850%2A4%29%2B%2860%2A3.5%29%29%2F%284%2B3.5%29
a = %28200%2B210%29%2F%287.5%29
a = 542%2F3 km/hr, average speed for the trip