How many seconds will a 550 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 63 km/hr? Choose the correct choice from the following answers:
A) 12 sec
B) 30 sec
C) 33 sec
D) 16 sec
E) 18 sec
Speed of train relative to man = 63 - 3= 
<gadget id="calculator">63 - 3</gadget>
<output>60</output>
60 km/hr.= 60 * 5/18 = 50/3 m/sec.   Time taken to pass the man = 550 * 3/50= 
<gadget id="calculator">550 * 3/50</gadget>
<output>33</output>
33 sec.   Answer: 33 sec
<result>C</result>
How many seconds will a 550 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 63 km/hr?