Two trains running opposite to each other with a speed of 60kph and 55kph having lengths of 180m and 200m respectively. How long it will take the trains to completely pass each other(in seconds)?  Select the correct option:  A) 9.89  B) 10.21  C) 11.89  D) 14.22  E) 19.13
Speed of the train relative to each other=60+55= 
<gadget id="calculator">60+55</gadget>
<output>115</output>
115kph=31.94m/s   Distance need to be covered=180+200= 
<gadget id="calculator">180+200</gadget>
<output>380</output>
380m   Time taken by the trains to pass each other=380/31.94=11.89s   Answer: 11.89
<result>C</result>
Two trains running opposite to each other with a speed of 60kph and 55kph having lengths of 180m and 200m respectively. How long it will take the trains to completely pass each other(in seconds)?