document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=324498>Question 324498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help I'm lost! I need to solve using the quadratic formula. An airplane makes a 990km flight with a tailwind and returns, flying into the same wind. The total flying time is 3 hours 20 minutes, and the airplane's speed in still air is 600 km/h. What is the spped of the wind? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232279 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=232279\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> time = distance / rate\r<BR>\n" );
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document.write( "working in hrs ___ 10/3 = [990 / (600 + w)] + [990 / (600 - w)]\r<BR>\n" );
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document.write( "multiplying by 3(360000-w^2) the LCD ___ 3600000 - 10w^2 = 3[990(600-w)] + 3[990(600+w)]\r<BR>\n" );
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document.write( "0 = w^2 - 3600\r<BR>\n" );
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document.write( "w = ±60 </SPAN>\n" );
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