# A Train 420 Metres Long is Running at a Speed of 80 km/hour. It will Pass a Bridge 180 metres Long in

- 15 seconds
- 27 seconds
- 13.5 seconds
- 7.5 seconds

**Answer is 27 seconds**

**Explanation:-**The length of a train = 420 meters

The length of a bridge = 180 meters

Total length covered by the train = 420 + 180

= 600 meters

The speed of the train = 80 km/hr

= 80 x 5/18 m/sec

Time taken by the train to pass the bridge = 600 x 18/80 x 5

= 27 sec

Then, It will pass a bridge 180 meters long in 27 sec.

Hence, the answer is (2) 27 seconds