A train which has 390 m long, is running 45 kmph. In what time will it cross a person moving at 9 kmph in same direction ?  Pick:  A) 26 sec  B) 39 sec  C) 36 sec  D) 29 sec  E) 30 sec
Time taken to cross a moving person = length of train/ relative speed   Time taken = 390/((45-9) (5/18) = 390/ 36*(5/18) = 390/10= 
<gadget id="calculator">390/10</gadget>
<output>39</output>
39 sec   Answer: 39 sec
<result>B</result>
A train which has 390 m long, is running 45 kmph. In what time will it cross a person moving at 9 kmph in same direction ?