document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1037668>Question 1037668</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Airplane A travels 2400 km at a certain speed. Plane B travels 1800 km at a speed 50 km/h faster than Plane A in 2 hours less time. Find the speed of each plane.\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #652318 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=652318\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "            RATE       TIME      DISTANCE\r\n" );
document.write( "A           r          t          2400\r\n" );
document.write( "B           r+50       t-2        1800\r\n" );
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document.write( "That must make sense to you first.\r<BR>\n" );
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document.write( "Continue when that information does make sense.\r<BR>\n" );
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document.write( "Travel Rates Rule is RT=D to relate rate, time, distance.<BR>\n" );
document.write( "Form this system of equations:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28rt=2400%2C%28r%2B50%29%28t-2%29=1800%29 ALIGN=MIDDLE  ALT=\"system%28rt=2400%2C%28r%2B50%29%28t-2%29=1800%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Many algebraic steps needed in solving the system for r and t.<BR>\n" );
document.write( "You would make a couple of different substitutions through the process.\r<BR>\n" );
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document.write( "Starting with the \"1800\" equation,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rt%2B50t-2r-100=1800 ALIGN=MIDDLE  ALT=\"rt%2B50t-2r-100=1800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the first equation of the system to make substituion:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rt%2B50t-2r-100=1800 ALIGN=MIDDLE  ALT=\"rt%2B50t-2r-100=1800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2400%2B50t-2r-100=1800 ALIGN=MIDDLE  ALT=\"2400%2B50t-2r-100=1800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50t-2r%2B500=0 ALIGN=MIDDLE  ALT=\"50t-2r%2B500=0\"   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%2825t-r%2B250=0%29 ALIGN=MIDDLE  ALT=\"highlight_green%2825t-r%2B250=0%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now you will make another substitution using the \"2400\" equation either solved for r or solved for t... </SPAN>\n" );
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