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Two trains of equal length are running on parallel lines in the same direction at 46 km/h and 36 km/h. The faster train passes, the slower train in 36 seconds. The length of each train is :
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- 82 m
- 50 m
- 80 m
- 72 m
Correct Option: B
Let the length of each train be x metre.
Relative speed = 46 – 36 = 10 kmph
| = | metre/second | |
| 18 |
| = | metre/second | |
| 9 |
| ∴ | = 36 | |
| (25/9) |
| ⇒ 2x = | = 100 | |
| 9 |
⇒ x = 50 metre
