document.write( "Question 557648: An airplane travels 1800 km in 6 h flying with the wind. It travels only two thirds as far in the same time against the wind. Find the speed of the wind.\r
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Algebra.Com's Answer #362720 by mananth(16946)\"\" \"About 
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plane speed = 300 mph
\n" ); document.write( "wind speed = x mph
\n" ); document.write( "wind speed
\n" ); document.write( "speed against wind 300 - x
\n" ); document.write( "speed with wind 300 + x
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\n" ); document.write( "Distance against wind 1200 miles
\n" ); document.write( "Distance with wind 1800 miles
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\n" ); document.write( "t=d/r time against = time with wind
\n" ); document.write( "1200/(300-x)=1800/(300+x)
\n" ); document.write( "1200(300+x)=1800(300-x)
\n" ); document.write( "360000 + 1200x = 540000-1800x
\n" ); document.write( "1800x +1200x = 180000
\n" ); document.write( "3000 x = 180000
\n" ); document.write( "/ 3000
\n" ); document.write( "x = 60 mph wind speed
\n" ); document.write( "m.ananth@hotmail.ca
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