Question

A train travels at a speed of 60 km per hour for 0.50 hours at 40 km per hour for 90.3 5 hours and then at 70 km per hour for the next 0.70 hours what is the average speed of the train

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)