document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177011>Question 177011</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help.<BR>\n" );
document.write( "A 6 passenger plane cruises at 180mph in calm air. If the plane flies 7 miles with the wind in the same amount of time as it flies 5 miles against the wind,then what is the wind speed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132132 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=132132\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if d=rt, then t=d/r __ the TIMES are the same\r<BR>\n" );
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document.write( "let w=wind\r<BR>\n" );
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document.write( "7/(180+w) = 5/(180-w)\r<BR>\n" );
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document.write( "\"cross\" multiplying __ 7*180 - 7w = 5*180 + 5w\r<BR>\n" );
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document.write( "adding 7w and subtracting 5*180 __ 2*180 = 12w\r<BR>\n" );
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document.write( "dividing by 12 __ 30 = w </SPAN>\n" );
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