Question

A car moves a distance of 200 m. It covers
the first half of the distance at speed
40 km/h and the second half of distance at
speed v. The average speed is 48 km/h. The
value of v is
(a) 56 km/h
(b) 60 km/h
(c) 50 km/h
(d) 48 km/h. ​

Answer 1

Answer:

We have given the speed of the car in the first half is v1=40km/hr and the average speed of the car in the total journey is vavg=48km/hr. Therefore, the correct answer is option D.

Explanation:

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Answer 2

Answer:

(d) 48 km/h.

Explanation:

We have given the speed of the car in the first half is v1=40km/hr and the average speed of the car in the total journey is vavg=48km/hr. Therefore, the correct answer is option D