What will be the Length of Equal Train? If

Two trains of equal length are running on parallel line in the same direction at the rate of 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of equal train is

  1. 50 m
  2. 72 m
  3. 80 m
  4. 82 m
Manish Listener Asked on 16th July 2015 in Maths.
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1 Answer(s)

Answer: (1) 50 m
Explanation:-
Let be the length of each train = X miters
Then, the total distance covered = 2X miters
Relative speed = 46 – 36 = 10 km/hr.
Relative speed in m/sec = 10 x 5/18 m/sec.
= 25/9 m/sec
Therefore, 2X/36 = 25/9
2X = 25 x 36 /9
2X = 100
X = 50 m
Hence, the answer is (1) 50 m. 

Anurag Mishra Professor Answered on 16th July 2015.
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