document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920761>Question 920761</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this equation: In 2hours30mins an airplane travels 600 km against the wind. The return trip (with the wind) takes 1hour40mins. Find the speed of the wind and the speed of the airplane in still air.\r<BR>\n" );
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document.write( "Just plugging these numbers into D=RT isn't working. (I had converted the hours to minutes first, it's still not coming out right) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558564 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558564\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r, speed if no wind<BR>\n" );
document.write( "w, speed of the wind\r<BR>\n" );
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document.write( "____________________speed__________time_________distance<BR>\n" );
document.write( "AGAINST_____________r-w____________2&1/2________<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=%28r-w%29%282%261%2F2%29=600 ALIGN=MIDDLE  ALT=\"d=%28r-w%29%282%261%2F2%29=600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "WITH________________r+w____________1&2/3________<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=%28r%2Bw%29%281%262%2F3%29=600 ALIGN=MIDDLE  ALT=\"d=%28r%2Bw%29%281%262%2F3%29=600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Two linear equation in the two unknown variables r and w.\r<BR>\n" );
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document.write( "AGAINST:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r-w%29%285%2F2%29=600 ALIGN=MIDDLE  ALT=\"%28r-w%29%285%2F2%29=600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%28r-w%29=1200 ALIGN=MIDDLE  ALT=\"5%28r-w%29=1200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r-w=12%2A20 ALIGN=MIDDLE  ALT=\"r-w=12%2A20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28r-w=240%29 ALIGN=MIDDLE  ALT=\"highlight_green%28r-w=240%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "WITH:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%2Bw%29%285%2F3%29=600 ALIGN=MIDDLE  ALT=\"%28r%2Bw%29%285%2F3%29=600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%28r%2Bw%29=1800 ALIGN=MIDDLE  ALT=\"5%28r%2Bw%29=1800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%2Bw=18%2A20 ALIGN=MIDDLE  ALT=\"r%2Bw=18%2A20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28r%2Bw=360%29 ALIGN=MIDDLE  ALT=\"highlight_green%28r%2Bw=360%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Elimination Method would be easiest to use. </SPAN>\n" );
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