A train 125 m long passes a man, running at 6 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is? Answers:
A) 51
B) 50
C) 88
D) 65
E) 22
Speed of the train relative to man = (125/10) m/sec = (25/2) m/sec. [(25/2) * (18/5)] km/hr   = 45 km/hr. Let the speed of the train be x km/hr. Then, relative speed = (x - 6) km/hr. x - 6 = 45 ==&gt; x   = 51 km/hr.   51nswer:51
<result>A</result>
A train 125 m long passes a man, running at 6 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is?