A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 25 seconds. The speed of the train is: Choose the correct choice from the following choices:  A) 45 km/hr  B) 50 km/hr  C) 95 km/hr  D) 55 km/hr  E) 56 km/hr
Speed of the train relative to man = (125/25) m/sec =25 m/sec. [(25 * (18/5)] km/hr = 90 km/hr. Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr. x - 5 = 90 ==&gt; x = 95 km/hr.   ANSWER:95 km/hr
<result>C</result>
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 25 seconds. The speed of the train is: