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Two trains start from a certain place on two parallel tracks in the same direction. The speed of the trains are 45 km/hr. and 40 km/hr respectively. The distance between the two trains after 45 minutes will be
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- 2.5 km.
- 2.75 km.
- 3.7 km.
- 3.75 km.
Correct Option: D
Relative speed = 45 – 40 = 5 kmph.
| ∴ Gap between trains after 45 minutes = |  | 5 × |  | km | |
| 60 |
= 3.75 km.
