Question

A train 130 metres long travels at a speed of 45 kilometre per hour crosses a bridge in 30 seconds the length of the bridge is is​

Answer 1

Answer:

245 m

Step-by-step explanation:

Length of the train=130 m

Speed of the train=45 km /h

=(45×10)/36=12.5 m/ s

Time taken to cross the bridge=30 second

So total length= speed×time=12.5×30

=125×3=375 m.

So length of the bridge=375-130=245 m.

hope you got it.