document.write( "Question 1065446: A plane flies 1200 miles in 4.8 hours against the wind. Returns 1200 miles with the wind in 4 hours. What is the wind speed. What is the plane speed.\r
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\n" ); document.write( "\n" ); document.write( "1200=(p-w)4.8
\n" ); document.write( "1200=(p+w)4\r
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Algebra.Com's Answer #680592 by Alan3354(69443)\"\" \"About 
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A plane flies 1200 miles in 4.8 hours against the wind. Returns 1200 miles with the wind in 4 hours. What is the wind speed. What is the plane speed.\r
\n" ); document.write( "\n" ); document.write( "d=rt\r
\n" ); document.write( "\n" ); document.write( "1200=(p-w)4.8
\n" ); document.write( "1200=(p+w)4
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\n" ); document.write( "And?
\n" ); document.write( "(p-w)4.8 = (p+w)4
\n" ); document.write( "Now what?
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\n" ); document.write( "The plane's airspeed is the average of the groundspeeds upwind and downwind.
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\n" ); document.write( "1200/4.8 upwind
\n" ); document.write( "1200/4 downwind
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\n" ); document.write( "Windspeed is the difference between airspeed and groundspeed.
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