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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document.write( "speed of the jet in still air? _____
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document.write( "speed of the wind? _____ \r
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Algebra.Com's Answer #105638 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |