A train 325 m long passes a man, running at 10 km/hr in the same direction in which the train is going, in 45 sec. The speed of the train is? Options:
A) 12 km/hr
B) 13 km/hr
C) 14 km/hr
D) 15 km/hr
E) 16 km/hr
Speed of the train relative to man = 325/45 = 65/9 m/sec.   = 65/9 * 18/5= 
<gadget id="calculator">65/9 * 18/5</gadget>
<output>26</output>
26 km/hr   Let the speed of the train be x km/hr. Then, relative speed= (x - 10) km/hr.   x - 10 = 26 =&gt; x = 16 km/hr.   Answer: 16 km/hr
<result>E</result>
A train 325 m long passes a man, running at 10 km/hr in the same direction in which the train is going, in 45 sec. The speed of the train is?