A plane moves from a place 9N 40E to a place 9N 40W taking 8 hours to travel. If the plane had left at 10.00 a.m. then what is the local time of arrival at the destination?
Choose the correct choice from the following choices.
A) 11.40 p.m.  B) 12.40 p.m.  C) 1.40 p.m.  D) 2.40 p.m.  E) 4.40 p.m.
Time difference between places will be 4*(40+40)= 
<gadget id="calculator">4*(40+40)</gadget>
<output>320</output>
320 min=   5 hrs 20 min   as change of 1 degree in longitude cause change of 4 minutes in time.   and that change is 80 degrees here.   so when plane land. time will be = 10.00 + 8.00 -5.20 = 12.40 p.m.   ANSWER:12.40 p.m.
<result>B</result>
A plane moves from a place 9N 40E to a place 9N 40W taking 8 hours to travel. If the plane had left at 10.00 a.m. then what is the local time of arrival at the destination?