document.write( "Question 433025: A plane flew 720 miles in 3 hours with a tailwind. It would take 4 hours to travel the same distance with a headwind. Find the speed of the plane in still air and speed of wind. \n" ); document.write( "
Algebra.Com's Answer #300154 by Alan3354(69443)\"\" \"About 
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720/3 = 240 mph
\n" ); document.write( "720/4 = 180 mph
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\n" ); document.write( "The airspeed is the average (240 + 180)/2 = 210 mph
\n" ); document.write( "The windspeed is the difference = 30 mph
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