Answers

2016-04-28T11:28:42+05:30
Velocity of the train = 15 km/h = 15 × 5/18 = 25/6m/s
Length of the train = 20m 
Time taken by the train to cross = 12sec
Total length = length of train + length of station 
                     = 12 × 25/6  = 50m
Length of station = 50m - 20m = 30m
0