document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=715922>Question 715922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist needs 120millileters of a 21% solution but has only 11% and 71% solutions avaible. Find how many millileters of each that should be mixed to get the desired solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #439682 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=439682\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (target matter)/(amount of solution)=(target concentration)\r<BR>\n" );
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document.write( "x = volume of 11%<BR>\n" );
document.write( "y = volume of 71%\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2811x%2B71y%29%2F120=21 ALIGN=MIDDLE  ALT=\"%2811x%2B71y%29%2F120=21\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=120 ALIGN=MIDDLE  ALT=\"x%2By=120\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Rational equation gives us<BR>\n" );
document.write( "11x+71y=120*21<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B71y=2520 ALIGN=MIDDLE  ALT=\"11x%2B71y=2520\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solve the system for x and y:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B71y=2520 ALIGN=MIDDLE  ALT=\"11x%2B71y=2520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=120 ALIGN=MIDDLE  ALT=\"x%2By=120\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Multiplying the simple \"120\" equation by 11, then we have <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B71y=2520 ALIGN=MIDDLE  ALT=\"11x%2B71y=2520\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B11y=1320 ALIGN=MIDDLE  ALT=\"11x%2B11y=1320\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Subtract the second equation from the first and ... find a value for y.  Then use the simpler x+y=120 equation to find the value for x.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B71y-11x-11y=2520-1320 ALIGN=MIDDLE  ALT=\"11x%2B71y-11x-11y=2520-1320\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60y=1200 ALIGN=MIDDLE  ALT=\"60y=1200\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 6y=120<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=20%29 ALIGN=MIDDLE  ALT=\"highlight%28y=20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, ml. of the 71% solution... </SPAN>\n" );
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