document.write( "Question 886844: In 2.5 hours an airplane travels 1150 km against the wind. It takes 50 mins to travel 450 km with the wind. find the speed of the wind and the speed of the airplane in still air. \n" ); document.write( "
Algebra.Com's Answer #536222 by Alan3354(69443)\"\" \"About 
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Find the 2 groundspeeds, upwind and downwind.
\n" ); document.write( "The plane's airspeed is the average of them.
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\n" ); document.write( "The windspeed is the difference between airspeed and groundspeed.
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