How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 75 km/hr? Choose one:	A) 25	B) 30	C) 99	D) 88	E) 61
Speed of train relative to man = 75 - 3= 
<gadget id="calculator">75 - 3</gadget>
<output>72</output>
72 km/hr.= 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 m/sec.   Time taken to pass the man= 500 * 1/20= 
<gadget id="calculator">500 * 1/20</gadget>
<output>25</output>
25 sec.   25nswer: 25
<result>A</result>
How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 75 km/hr?