document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=580321>Question 580321</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane flew for 6 hours with a 22-km/h tail wind. the return flight against the same wind took 8 hours. find the speed of the plane in stil air. how do i set up this equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #371207 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=371207\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let the distance be y\r<BR>\n" );
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document.write( "speed of plane in still air be x\r<BR>\n" );
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document.write( "withwind speed = x+22<BR>\n" );
document.write( "against wind speed = x-22\r<BR>\n" );
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document.write( "time with wind = 6 hours<BR>\n" );
document.write( "time against wind = 8 hours<BR>\n" );
document.write( "distance = speed & time\r<BR>\n" );
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document.write( "(x+22)6 =Y<BR>\n" );
document.write( "(x-22)*8 y\r<BR>\n" );
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document.write( "(x+22)*6 = (x-22)*8\r<BR>\n" );
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document.write( "6x+132=8x-176\r<BR>\n" );
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document.write( "8x-6x=132+176<BR>\n" );
document.write( "2x=308<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "x= 154\r<BR>\n" );
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document.write( "Speed of plane in still air = 154 mph </SPAN>\n" );
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