A car moving on a straight road covers the one third of the total distance with20km/h and the rest with60km/h the average speed is
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Answer:Assuming the total distance to be 3x.
Time taken by the car to cover one-third of the distance = x/20
Time taken to cover two-thirds of the distance by the car = 2x/60
= x/30 Total time taken by the car
= x/20 + x/30 equals to 5x/60 which is x/12
Average speed obtained= (Total distance travelled)/(Total time taken)
= (3x)/(x/12) = 36 kilometre/hour
Explanation:
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