A bullet train passes a station platform in 36 seconds and a man standing on the platform in 23 seconds. If the speed of the bullet train is 54 km/hr, what is the length of the platform? Choose one.
A) 240 m
B) 220 m
C) 195 m
D) 224 m
E) 239 m
A   195 M   Speed = 54 x 5/18 = 15 m/s   Length of the bullet train = (15 x 23)m = 345 m.   Let the length of the platform be x metres.   Then, (x + 345)/36 = 15   --&gt; x + 345 = 540   x = 195m. 195 m
<result>C</result>
A bullet train passes a station platform in 36 seconds and a man standing on the platform in 23 seconds. If the speed of the bullet train is 54 km/hr, what is the length of the platform?