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A train running at the speed of 84 km/hr passes a man walking in opposite direction at the
speed of 6 km/hr in 4 seconds. What is the length of train (in metre) ?
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- 150
- 120
- 100
- 90
Correct Option: C
Relative speed = (84 + 6) = 90 kmph
| = |  | 90 × |  | m/sec. | |
| 18 |
= 25 m/sec.
∴ Length of train
= Relative speed × Time
= 25 × 4 = 100 metre
