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

✅ The correct answer is option A.
Let the length of each train be x metres.
Then, distance covered = 2x metres.
Relative speed = (46 – 36) km/hr

10 x
5
m/sec

25
m/sec

2x
=
25

36
9

2x = 100
x = 50.

82. 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: