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
72 m
80 m
82 m
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].
[B].
[C].
[D].
Answer: Option A
Explanation:
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 | |
| 18 |
| = | 25 | m/sec | |
| 9 |
| 2x | = | 25 | |
| 36 | 9 |
2x = 100
x = 50.