A car moves with a speed of 30 km/ hour -1 for half and for 25 km/ hour - 1 for and 40 km /hour -1 for 2 hours calculate the average speed of the car
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write data again
Explanation:
A car moves with a speed of 30 km/ hour -1 for half and for 25 km/ hour - 1 for (what) and 40 km /hour -1 for 2 hours calculate the average speed of the car
av speed = total distance/total time
= (30 x (1/2)+25 x ? +40 x 2)/(total time)
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