A 360 m long train is running at a speed of 55 Km/hr. It crossed a platform of length 520 m in ? Choose the correct choice:
A) 57.6 sec
B) 20.2 sec
C) 31.8 sec
D) 50.4 sec
E) none of the above
Speed = 55 Km/hr   (to convert km/hr in to M/s)   = 55 x 5/18 M/s   Distance = 360 m + 520 m ( If questions is about train crossing a post you need to consider only the length of Train, )   = 880 m   Time = Distance / Speed   = 880 x 18 / (5 x 55)   = 57.6 sec   57.6 secns is :57.6 sec
<result>A</result>
A 360 m long train is running at a speed of 55 Km/hr. It crossed a platform of length 520 m in ?