document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=370894>Question 370894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane can travel 320 mph in still air. If it travels 690 miles with the wind in the same length of time it travels 510 miles against the wind, what is the speed of the wind? I have the answer I just need help creating an equation for this word problem. The answer is 48 mph. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264291 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=264291\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t = d / r ___ the times are equal\r<BR>\n" );
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document.write( "690 / (320 + w) = 510 / (320 - w)\r<BR>\n" );
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document.write( "\"cross\" multiplying is a good start </SPAN>\n" );
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