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A train passes two bridges of lengths 500 m and 250 m in 100 seconds and 60 seconds respectively. The length of the train is :
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- 152 m
- 125 m
- 250 m
- 120 m
Correct Option: B
Length of train = x metre (let)
| Speed of train = | |
| Time taken in crossing |
| ⇒ | = | ||
| 100 | 60 |
| ⇒ | = | ||
| 5 | 3 |
⇒ 5x + 1250 = 3x + 1500
⇒ 5x – 3x = 1500 – 1250
⇒ 2x = 250
| ⇒ x = | = 125 metre | |
| 2 |
