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A moving train passes a platform 50 metres long in 14 seconds and a lamp-post in 10 seconds. The speed of the train is
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- 24 km/hr.
- 36 km/hr.
- 40 km/hr.
- 45 km/hr.
Correct Option: D
Suppose length of train be x
According to question
| = | ||
| 14 | 10 |
⇒ 14x = 10x + 500
⇒ 4x = 500
| ⇒ x = | = 125 m | |
| 4 |
Therefore, speed
| = | × | = 45 kmph | ||
| 10 | 5 |
