document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=322270>Question 322270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane travels 3000km in 3 hours with a tail wind, and 3000km in 4 hours with a head wind.  Find the speed of the plane and 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 #230690 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=230690\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let V be the plane speed, W the wind speed.<BR>\n" );
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document.write( "Rate*Time=Distance<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28V%2BW%293=3000 ALIGN=MIDDLE  ALT=\"%28V%2BW%293=3000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V%2BW=1000 ALIGN=MIDDLE  ALT=\"V%2BW=1000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28V-W%294=3000 ALIGN=MIDDLE  ALT=\"%28V-W%294=3000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V-W=750 ALIGN=MIDDLE  ALT=\"V-W=750\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add eq. 1 and eq. 2,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V%2BW%2BV-W=1000%2B750 ALIGN=MIDDLE  ALT=\"V%2BW%2BV-W=1000%2B750\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2V=1750 ALIGN=MIDDLE  ALT=\"2V=1750\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28V=875%29 ALIGN=MIDDLE  ALT=\"highlight%28V=875%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > kph<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=875%2BW=1000 ALIGN=MIDDLE  ALT=\"875%2BW=1000\"   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=125%29 ALIGN=MIDDLE  ALT=\"highlight%28W=125%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > kph </SPAN>\n" );
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