A train moves at a constant speed of 120 km/h for one kilometre and at 40 mph for the next one kilometre. What is the average speed of the train
Answers
Answered by
0
Given V1= 120 km/hr
And 1 mile=1.609344 km
So V2= 40*1.609344=64.37376 km/hr
Avg. Speed =2* V1*V2/(V1+V2)
= 2*120*64.37376/(120+64.37376)
=83.79 km/hr
Similar questions