Question

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:
A. 50 m
B. 72 m
C. 80 m
D. 82 m

Answer 1

option a
 Let the length of each train be x metres.

Then, distance covered = 2x metres.

Relative speed = (46 - 36) km/hr

   =10 x5/18m/sec

   =25/9 m/sec

2x/36=25/9

 2x = 100

 x = 50

Answer 2

A part 50 m is the right answer.

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