A train 125 m long passes a man, running at 1 km/hr in the same direction in which the train is going, in 10 sec. The speed of the train is?
Answers
A) 65 km/hr	B) 17 km/hr	C) 76 km/hr	D) 50 km/hr	E) 46 km/hr
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 - 1) km/hr.   x - 1 = 45 =&gt; x = 46 km/hr.   Answer: 46 km/hr
<result>E</result>
A train 125 m long passes a man, running at 1 km/hr in the same direction in which the train is going, in 10 sec. The speed of the train is?