A train which has 500 m long, is running 100 kmph. In what time will it cross a person moving at 10 kmph in same direction ?
Select.
A) 20 sec  B) 25 sec  C) 30 sec  D) 35 sec  E) 40 sec
Time taken to cross a moving person = length of train/ relative speed   Time taken = 500/((100-10) (5/18) = 500/ 90*(5/18) = 500/25= 
<gadget id="calculator">500/25</gadget>
<output>20</output>
20 sec   20 secnswer: 20 sec
<result>A</result>
A train which has 500 m long, is running 100 kmph. In what time will it cross a person moving at 10 kmph in same direction ?