Question

A train travels at a speed 50km/hrfor 0.5hr at 30km/hr for next 0.26hr and then 70km/hr for next 0.76hr what is the average speed of the train?

Answer 1

total distance
50×0.5+30×0.26+70×0.76=86

total time
0.5+0.26+0.76=1.52

average speed
td/tt
=86/1.52=56.578