How many seconds will a 400 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? Select
A) 26 sec B) 30 sec C) 24 sec D) 19 sec E) 11 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 = 400 * 3/50= 
<gadget id="calculator">400 * 3/50</gadget>
<output>24</output>
24 sec.   Answer:24 sec
<result>C</result>
How many seconds will a 400 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?