Two trains of lengths 110 m and 90 m are running on parallel tracks at 45 km hr and 50 km hr respect......

Two trains of lengths 110 m and 90 m are running on parallel tracks at 45 km/hr and 50 km/hr respectively. In what time will they pass each other?

Distance to be covered is 110 + 90 = 200 m.

Relative speed is 50 – 45 = 5 km/hr = 5 × 5/18 = 25/18 m/s.

So time required = 200/(25/18) = 144 sec.

Hence, option 4 is the correct answer.

By: Amit Kumar