A train travelling at 78 km hr crosses a girl sitting in a train of length 110 m travelling in the s......

A train travelling at 78 km/hr crosses a girl sitting in a train of length 110 m travelling in the same direction at 42 km/hr in 20 seconds. The length of the faster train is

Let the length of the faster train = x

18x/[5(78-42)]

= 20→ x=200
→ 200m

Hence, opton 4 is the correct answer.

By: Amit Kumar