Two trains 200 m and 300 m long are running on parallel rails at the rate of 50 kmph and 60 kmph respectively. In how much time will they cross each other, if they are running in the same direction ?

72 sec

132 sec

180 sec

192 sec

Relative Speed = (60 - 50 ) Kmph = 10 kmph =(10 x 5 / 18)m/sec = (25 / 9 ) m/sec Time taken = (500 x 9 / 25) sec = 180 sec.

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