Question

A train 150 m long is running at 72 km/hr. It crosses a bridge in 13 seconds. Find
the length of the bridge.​

Answer 1

Answer:

let the length of bridge=xm

length of train=150m

speed of train=72km/hr

train cross the bridge=length of train+bridge length=150+x in 13s

length of bridge=72*5/18*13=260-150=110m

Answer 2

Answer:

110m

Step-by-step explanation:

Distance travelled by front part of train=Speed×Time

                                                                =72km/hr × 13/3600hr

                                                                =0.26km

In the given time the entire train body passes through the tunnel.So, we will have to subtract the lenght of the train from the whole distance.

So, lenght of bridge=260m - 150m

                                =110m