Question

A train travels at a speed of 60 kilometre per hour for 0.52 hours at 30 kilometre per hour for next 0.24 hours and then 70 kilometre per hour for next 0.71 hour what is the average speed

Answer 1

Hi friend,

Distance 1 =60 km/h
Time 1 =0.52 hrs

Distance 2= 30km/h
Time 2=0.24 hrs

Distance 3= 70km/h
Time 3=0.71hrs

Average speed= TOTAL DISTANCE/TOTAL TIME TAKEN

= 60+30+70/0.52+0.24+0.71
=160/1.47
=160*100/147
=16000/147
= 108.84 (approx)

Hope it helps.!!!

Answer 2

we are given all the three distances with their time. And we know that Average speed= total distance/ total time
= 60+30+70/0.52+0.24+0.71
=16000/147
= 108.84