Question

a train traveling at the speed of 90 km/h crosses a 220 m long platform on 15 seconds find the length of the train

Answer 1

Speed = 90km/hr =90X5/18 m/s= 25m/s
Time=15s

distance=speed X Time
= 25X15
=375m

now this distance is total length of train+ Length of platform
so length of train= total distance- platform
=375-220
=125m

Answer 2

answer of this question is 155