One car moving on a straight roads cover one third of distance with 20km/hour and the rest with 60km/hour the average speed will be
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Explanation:
Assuming the total distance to be 3x.
Time is taken by the car to cover one-third of the distance = x/20
Time is 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 traveled)/(Total time taken)
= (3x)/(x/12) = 36 kilometre/hour
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Answer:
36km/hr
read above for explanation
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