Question

a train travel some distance with a speed of 70km/h and the retun with a speed 45km/h claculate the average speed of train​

Answer 1

Answer:

avg speed = 2xy/(x+y)

x andd y are speeds of a body

avg speed = 2*45*70/(45+70)

54.78km/hr is ur answer

Explanation:

Hope it helps u