document.write( "Question 763625: A jet takes 8 hours to travel a distance of 6272 against the wind. The return trip takes 7 hours with the wind. What is the rate of the jet in still air and what is the rate of the wind? \n" ); document.write( "
Algebra.Com's Answer #465005 by ankor@dixie-net.com(22740)\"\" \"About 
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A jet takes 8 hours to travel a distance of 6272 against the wind.
\n" ); document.write( " The return trip takes 7 hours with the wind.
\n" ); document.write( " What is the rate of the jet in still air and what is the rate of
\n" ); document.write( " the wind?
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\n" ); document.write( "Let s = the rate of the jet in still air
\n" ); document.write( "Let w = the rate of the wind
\n" ); document.write( "then
\n" ); document.write( "(s-w) = ground speed against the wind
\n" ); document.write( "(s+w) = ground speed with the wind
\n" ); document.write( ":
\n" ); document.write( "Write a distance equation for each way (dist = speed * time
\n" ); document.write( "8(s-w) = 6272
\n" ); document.write( "7(s+w) = 6272
\n" ); document.write( "We can simplify both equations, divide the 1st by 8, the 2nd by 7
\n" ); document.write( "s - w = 784
\n" ); document.write( "s + w = 896
\n" ); document.write( "-------------adding eliminates w find s
\n" ); document.write( "2s = 1680
\n" ); document.write( "s = 1680/2
\n" ); document.write( "s = 840 jet speed in still air
\n" ); document.write( "and you can find the rate of the wind
\n" ); document.write( "840 + w = 896
\n" ); document.write( ":
\n" ); document.write( "Check your solutions both ways
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