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A train passes an electrical pole in 20 seconds and passes a platform 250 m long in 45 seconds. Find the length of the train.
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- 400m
- 200m
- 300m
- 250m
Correct Option: B
If the length of train be x metre,
then speed of train
| = | = | ||
| 20 | 45 |
| ⇒ | = | ||
| 4 | 9 |
⇒ 9x = 4x + 1000
⇒ 9x – 4x = 1000
⇒ 5x = 1000
| ⇒ x = | = 200 metre | |
| 5 |
