Question

A train of 300 metre long is moving at a speed of 54 kilometre hours and it to 40 second to cross a bridge the length of a bridge is?​

Answer 1

Answer:

300 .40.5. 54 train goes to drige of lenghth 450

Answer 2

Let the length of bridge be L. Total distance required for the train to cross the bridge is,

d = (L + 300) m

The speed of the train is,

v = 54 km/h = 54 × 5 / 18 = 15 m/s

Then,

15 × 40 = L + 300

600 = L + 300

L = 300 m