document.write( "Question 144961: Here is one question a passenger jet took 3 hours to fly 1,800 miles in the direction of the wind. the return trip against the wind took 4 hours. what the jet's speed in still air and the speed of the wind? \r
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\n" ); document.write( "\n" ); document.write( "speed of the jet in still air? _____
\n" ); document.write( "speed of the wind? _____ \r
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Algebra.Com's Answer #105638 by Alan3354(69443)\"\" \"About 
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Speed of jet = j
\n" ); document.write( "Speed of wind = w\r
\n" ); document.write( "\n" ); document.write( "1800/(j+w) = 3 (took 3 hours with a tailwind)
\n" ); document.write( "1800/(j-w) = 4 (took 4 hours with a headwind)
\n" ); document.write( "1800 = 3(j+w)
\n" ); document.write( "1800 = 4(j-w)
\n" ); document.write( "3j + 3w = 1800
\n" ); document.write( "4j - 4w = 1800
\n" ); document.write( "j + w = 600
\n" ); document.write( "j - w = 450
\n" ); document.write( "Add the 2 eqns
\n" ); document.write( "2j = 1050
\n" ); document.write( "j = 525
\n" ); document.write( "w = 75
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