document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388500>Question 388500</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a plane flies 1200 miles in 2 hours with the jet stream and returns the same distance in two and a half hours against the wind. find 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 #274832 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=274832\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Rate*Time=Distance<BR>\n" );
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document.write( "Let P be the plane speed, W the wind speed.<BR>\n" );
document.write( "With the wind,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28P%2BW%292=1200 ALIGN=MIDDLE  ALT=\"%28P%2BW%292=1200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%2BW=600 ALIGN=MIDDLE  ALT=\"P%2BW=600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Against the wind, <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28P-W%292.5=1200 ALIGN=MIDDLE  ALT=\"%28P-W%292.5=1200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P-W=480 ALIGN=MIDDLE  ALT=\"P-W=480\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add the two equations,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%2BW%2BP-W=600%2B480 ALIGN=MIDDLE  ALT=\"P%2BW%2BP-W=600%2B480\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2P=1080 ALIGN=MIDDLE  ALT=\"2P=1080\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28P=540%29 ALIGN=MIDDLE  ALT=\"highlight%28P=540%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >mph<BR>\n" );
document.write( "Then from eq. 1,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=540%2BW=600 ALIGN=MIDDLE  ALT=\"540%2BW=600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28W=60%29 ALIGN=MIDDLE  ALT=\"highlight%28W=60%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >mph </SPAN>\n" );
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