A train 100 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is?  Choose the correct choice from the following:	A) 28	B) 50	C) 88	D) 41	E) 12
Speed of the train relative to man = (100/10) m/sec = (10) m/sec. [(10) * (18/5)] km/hr = 36 km/hr. Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr. x - 5 = 36 ==&gt; x   = 41 km/hr.Answer:41
<result>D</result>
A train 100 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is?