Question

the time for a train of length 110metres running at the speed of 72km/hr to cross a bridge of length 130metres is

Answer 1

Speed = 72 x 5/18 = 20 m/s

Total distance = 110 + 130 = 240 m

Time = 240/20 = 12 seconds

Answer 2

total distance =110+130
=240m
speed of train=72km/hr
time taken by the train:-. D=S×T
240=72×T
240/72=T
10/3=T ans