(c)zero(d)142sec/m2.One car moving on a straight road covers one third of thedistance with 20 km/hr and the rest with 60 km/hr. TheAverage speed is(a) 40 km/hr(b)80 km/hr(c) 3246km/hr(d)36 km/hr
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Answered by
4
heya...!!!
❤ here is ua answer:(Option D)
❤Explanation:
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
hope it helps..!!❤
anphin:
yes I didn't work out that way
Answered by
3
Step-by-step explanation:
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