What are you looking for? Let’s dig in quickly

Recommended

- A train speeds past a pole in 15 seconds
- A goods train runs at the speed of 72 km/h
- A train passes a station platform in 36 seconds
- A train covers a distance of 12 km in 10 minutes
- The length of the bridge, which a train 130 meters long
- A 270 meters long train running at the speed of 120km/h
- A train 800 meters long is running at a speed of 78 km/h
- A 300 meters long train crosses a platform in 39 seconds
- A train takes 18 seconds to pass completely through a station

## Explanation

Two trains of equal length are running on parallel lines in the same direction so average velocity will be calculated by subtracting 36 from 46 km/h.

To calculate the length (supposing y, then total length = y + y = 2y) we can use speed distance time formula;

Length (distance) = speed x time

## To Find

Length of the train = ?

## Solution

Relative speed = 46 – 36 = 10 km/h

This speed in m/sec will be;

Relative speed = (10 x 1000)/3600 = 25/9 m/sec

As, there are two trains, so total length = y + y = 2y (Let suppose length of train is “y”)

Now,

length = speed x time

2y = (25 x 36)/9

2y = 100

**y = 50m answer**

### Conclusion

Two trains of equal length are running on parallel lines in the same direction at 46 km/h and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train will be **50m**.