document.write( "Question 1154738: An airplane flying with the wind can cover 680 miles in 2 hours. The return trip against the wind takes 2 1/2 hours.\r
\n" ); document.write( "\n" ); document.write( "What is the speed of the plane?
\n" ); document.write( "The speed of the plane is_____miles per hour. \r
\n" ); document.write( "\n" ); document.write( "What is the speed of the air?
\n" ); document.write( "The wind's speed is_____miles per hour.
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Algebra.Com's Answer #777230 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Speed of airplane when no wind, r
\n" ); document.write( "Speed of the wind, w\r
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\n" ); document.write( "\n" ); document.write( "WITH the wind, speed was \"680%2F2=340=r%2Bw\".\r
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\n" ); document.write( "\n" ); document.write( "AGAINST the wind, speed was \"680%2F%282%261%2F2%29=272=r-w\".\r
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\n" ); document.write( "\n" ); document.write( "Solve this system, using Elimination Method if you wish:
\n" ); document.write( "\"system%28r%2Bw=340%2Cr-w=272%29\"
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