document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1073378>Question 1073378</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A fruit grower use two types of fertilizer in his orange grove, brand A and brand B. Each bag of brand A contains 9 pounds of nitrogen and 5 pounds of phosphoric acid. Each bag of brand B contains 8 pound of nitrogen and 6 pounds of phosphoric acid. Test indicate that the grove needs 770 pounds of nitrogen and 490 pounds of phosphoric acid. How many bags of each brand should be used to provide the required amounts of nitrogen and phosphoric acid. \r<BR>\n" );
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document.write( "I set up the equation with this:<BR>\n" );
document.write( "9a + 8b=770\r<BR>\n" );
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document.write( "5a + 6b=490\r<BR>\n" );
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document.write( "I then took equation #2 and times it by 2, then subtracted equation #1 from equation #2... \r<BR>\n" );
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document.write( "Help at a loss..  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #688214 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39621)</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=688214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you are trying to use Elimination Method, factor of 2 seems not to be a useful choice.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%289a%2B8b=770%2C5a%2B6b=490%29 ALIGN=MIDDLE  ALT=\"system%289a%2B8b=770%2C5a%2B6b=490%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Maybe try to eliminate terms of b.<BR>\n" );
document.write( "8*3=24,and,6*4=24.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%283%289a%2B8b%29=3%2A770%2C4%285a%2B6b%29=4%2A490%29 ALIGN=MIDDLE  ALT=\"system%283%289a%2B8b%29=3%2A770%2C4%285a%2B6b%29=4%2A490%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%2827a%2B24b=2310%2C20a%2B24b=1960%29 ALIGN=MIDDLE  ALT=\"system%2827a%2B24b=2310%2C20a%2B24b=1960%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Here, subtract equation #2 from #1.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7a=2310-1960 ALIGN=MIDDLE  ALT=\"7a=2310-1960\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7a=350 ALIGN=MIDDLE  ALT=\"7a=350\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a=50%29 ALIGN=MIDDLE  ALT=\"highlight%28a=50%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now maybe you can find how to solve for b on your own.  If you do this through Elimination, go back to the original system of equations and work from there. </SPAN>\n" );
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