A train crosses a platform in 15 sec, same train crosses another platform of length 250 m in 20 sec. If the speed of the train is 15 m/sec then find the length of the platform?	Pick one:
A) 277m
B) 180m
C) 165m
D) 278m
E) 175m
Length of the train be ‘X’   (X + 250)/20 = 15   X = 50m   Let the length of the platform be y   (y + 50)/15 = (50 + 250)/20   4y + 200 = 900   X = 1750m   Answer: 175m
<result>E</result>
A train crosses a platform in 15 sec, same train crosses another platform of length 250 m in 20 sec. If the speed of the train is 15 m/sec then find the length of the platform?