1] A train 140 m long is running at 60 kmph. In how much time will it pass a platform 260 m long?
a] 98 s b]24 s c]12 s d]14 s

Sol. Speed of the train = (60 x 5/18) m/sec =50/3m/sec.
       Distance covered in passing the platform = (140 + 260) m = 400 m
       :. Time taken = (400 x 3/50) see = 24 sec.

2] How long does a train 110 metres long running at the speed of 72 km/hour take to cross a bridge 132 metres in length.
a] 9.8 s b]12.1 s c]12.42 s d]14.3 s