A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?  Choose the correct choice from the following:	A) 120 m	B) 240 m	C) 300 m	D) 120 m	E) None of these
Speed = 54 x	5/18	m/sec = 15 m/sec.   Length of the train = (15 x 20)m = 300 m.Let the length of the platform be x metres.   Then,	9x + 3000/36	= 15   x + 300 = 540   x = 240 m. Answer: Option 240 m
<result>B</result>
A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?