document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=316822>Question 316822</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane with a tail wind makes its 785-mile flight in 2.5 hours.  The return flight against the wind takes a half hour longer.  What is the wind speed (rounded to the nearest mile per hour)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #226745 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=226745\">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 in still air, W be 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%29%2A2.5=785 ALIGN=MIDDLE  ALT=\"%28P%2BW%29%2A2.5=785\"   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=314 ALIGN=MIDDLE  ALT=\"P%2BW=314\"   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%29%2A3=785 ALIGN=MIDDLE  ALT=\"%28P-W%29%2A3=785\"   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=785%2F3 ALIGN=MIDDLE  ALT=\"P-W=785%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add eq.1 to eq. 2,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%2BW%2BP-W=314%2B785%2F3 ALIGN=MIDDLE  ALT=\"P%2BW%2BP-W=314%2B785%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2P=942%2F3%2B785%2F3 ALIGN=MIDDLE  ALT=\"2P=942%2F3%2B785%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2P=1727%2F3 ALIGN=MIDDLE  ALT=\"2P=1727%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=1727%2F6 ALIGN=MIDDLE  ALT=\"P=1727%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Then use either equation to solve for W.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1727%2F6%2BW=314 ALIGN=MIDDLE  ALT=\"1727%2F6%2BW=314\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=W=1884%2F6-1727%2F6 ALIGN=MIDDLE  ALT=\"W=1884%2F6-1727%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=W=157%2F6 ALIGN=MIDDLE  ALT=\"W=157%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > or approximately,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28W=26%29 ALIGN=MIDDLE  ALT=\"highlight%28W=26%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph<BR>\n" );
document.write( " </SPAN>\n" );
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