Two trains are running in opposite directions on parallel tracks at the speeds of 42 km/h and 57 km/h, respectively. They take 18 seconds to cross each other. If the length of one train is 295 m, then the length (in m) of the other train is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 200.
Relative speed = 42 + 57 = 99 km/h
⇒ = m/sec
Time = 18 seconds
Total distance = 27.5 × 18 = 495 m
Length of other train = 495 - 295 = 200 m