a car travels at a speed of 40 km per hour for 5 hours at 20 km\h for next 3hours then 70 km\h. for next 6. 7 hours what is the average speed of car
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Answer:45.5km/h
Explanation:
Average speed=Total distance /total time
distance=speed*time
Av speed=40*5+20*3+ 70*6.7/ 5+3+6.7
=45.5km/h
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