Question

hey guys plz help me out....
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Answer 1

Answer:

(D).36km/hr.

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/12Average

speed obtained= (Total distance travelled)/(Total time taken)

= (3x)/(x/12) = 36 kilometre/hour

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Answer 2

Answer:

A car moving on a straight road covers the one third of the total distance with 20 Km / h and the rest with 60 Km /h . The average speed is.... 36 km/h