Question

A train 50m long passes over a bridge at a speed of 30km per hour.If it takes 36 seconds to cross the bridge,the length of the train will be?

Answer 1

50 meters itself.... U have already mentioned it above in the starting of the statement

Answer 2

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

d = (L + 50) m

The speed of the train is,

v = 30 km/h = 30 × 5 / 18 = (25/3) m/s

Then,

36 × 25 / 3 = L + 50

300 = L + 50

L = 250 m