A train running at the speed of 80 km/h crosses a 350 m long tunnel in 36 seconds. The length of the train (in m) is

450

The correct answer is Option (4) → 450

Given,

The speed of the train = 80km/h = 80 × \(\frac{5}{18}\) = \(\frac{200}{9}\) m/sec

Time = 36 sec

Distance = 350 m

Let the length of the train = x meters.

We know that,

Speed = \(\frac{Distance}{Time}\) 

\(\frac{200}{9}\) = \(\frac{x + 350}{36}\)

800 = x + 350

x = 800 - 350 = 450 meters