A train 250 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) 95 km/hr B) 50 km/hr C) 54 km/hr D) 55 km/hr E) 56 km/hr
Speed of the train relative to man = (250/10) m/sec = 25 m/sec. [(25 * (18/5)] km/hr = 90km/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.   95 km/hrNSWER: 95 km/hr
<result>A</result>
A train 250 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: