   # Two trains of equal length are running on parallel lines in the same direction........What is the length of each train ?

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Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds.
What is the length of each train ? posted Dec 16, 2015

Let length of each train =x metres
distance covered=2x metres
difference in speed=(46-36)km/hr
=10km/hr=25/9m/sec
time taken to overtake=36 sec
d/t=speed
2x/36=25/9
x=50
ans length of each train is 50 metres answer Dec 16, 2015

Each train is 50 meters long.
In order for the faster train to pass the slower train, it has to travel a distance of 2 L (where L is the length of each train).
The difference in speed is 10 KMPH (46-36).
In 36 seconds at 10 KM the train will be able to cover 100 meters (36*100,000/3,600). If 2 L = 100 meters, L = 50 meters answer Feb 10, 2016

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