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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. The length of each train is

A. 50 m

B. 72 m

C. 80 m

D. 82 m

Correct Answer : A.


Let the length of each train be x metres.  Then, distance covered = 2x metres.  Relative speed = (46 - 36) km/hr = 10 x518 m/sec= 259 m/sec∴ 2x36 = 259⇒2x = 100⇒x = 50.

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