A train which has 250 m long, is running 40 kmph. In what time will it cross a person moving at 4 kmph in same direction ?  Select
A) 30 sec  B) 28 sec  C) 29 sec  D) 35 sec  E) 25 sec
Time taken to cross a moving person = length of train/ relative speed   Time taken = 250/((40-4) (5/18) = 250/ 36*(5/18) = 250/10= 
<gadget id="calculator">250/10</gadget>
<output>25</output>
25 sec   Answer: 25 sec
<result>E</result>
A train which has 250 m long, is running 40 kmph. In what time will it cross a person moving at 4 kmph in same direction ?