Correct option is A
Total Distance = Relative Speed × Time
360 = (128-110) ×Time
Time = 72 sec
Two trains A and B, 210 m and 150 m, respectively, in length, are running in the same direction on parallel lines. If the speed of A and B be 110 km/h and 128 km/h, respectively, then what will be the time (in seconds) taken by train B to cross train A?
Total Distance = Relative Speed × Time
360 = (128-110) ×Time
Time = 72 sec
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