A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 sec. The speed of the train is?
Choose the correct choice from the following answers
A) 50 km/hr
B) 24 km/hr
C) 8 km/hr
D) 5 km/hr
E) 16 km/hr
Explanation:   Speed of the train relative to man = 125/10 = 25/2 m/sec.   = 25/2 * 18/5= 
<gadget id="calculator">25/2 * 18/5</gadget>
<output>45</output>
45 km/hr   Let the speed of the train be x km/hr. Then, relative speed= (x - 5) km/hr.   x - 5 = 45 =&gt; x = 50 km/hr.   50 km/hrnswer: 50 km/hr
<result>A</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 10 sec. The speed of the train is?