Two trains of equals length are running on parallel line in the same direction at the rate of 46 kmph and 36 kmph. The faster train passes the slower train in 36 seconds. The length of each train is?

50 metres
72 metres
80 metres
82 metres

Correct Answer: 50 metres

Explanation:

Let the length of each train = L metres
Relative speed = (46 - 36) = 10 km/hr. = 10 x (5/18) = 25/9 m/sec
Distance covered in crossing = (L + L) = 2L metres
⇒ 2L x (9/25) = 36
∴ L = (25 x 36)/(2 x 9) = 50 metres.

← Previous Question Next Question→

More Questions from Problems on Trains

Two trains 132 metres and 108 metres long are running in opposite directions, one at the rate of 32 kmph and another one at the rate of 40 kmph. From the moment they meet they will cross each other in?
A train 300 m long crossed a platform 900 m long in 1 minute 12 seconds. The speed of the train in km/hr was?
How long will a train 130 m long travelling at 40 km an hour, take to pass a kilometer stone?
A train travelling at 30 km an hour took 13 1/ 2 sec in passing a certain point. Find the length of the train?
A train 160 metres long passes a standing man in 18 seconds. What is the speed of the train?
Find the length of a bridge, which a train 130 metres long travelling at 45 km an hour, can cross in 30 seconds?
A column of men, extending 250 metres in length takes one hour to march through a street at the rate of 50 paces a minute, each pace being 75 cm. Find the length of the street?
A train 540 m long is running with a speed of 72 km/hr. In what time it pass a tunnel 160 m long?
A train 200 m long is running with a speed of 72 km/hr. In what time will it pass a platform 160 m long?
A train 150 m long passes a telegraphs post in 12 seconds. Find in what time, it will pass a bridge 250 m long?

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion