document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=226451>Question 226451</A>: <I><SPAN STYLE=\"word-break: break-all;\"> System of equations:\r<BR>\n" );
document.write( "\n" );
document.write( "A laboratory assistant is asked to mix 30% alcohol solution with 21 liters of an 80% alcohol solutuion to make a 60% alcohol solution. How many liters of the the 30% alcohol solution should be used. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #168651 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=168651\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of 30% solution to be used<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "(liters of alcohol I end up with)/(total liters at end) = 60%<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "I am adding <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.3x ALIGN=MIDDLE  ALT=\".3x\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of alcohol to solution<BR>\n" );
document.write( "The solution already contains <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.8%2A21+=+16.8 ALIGN=MIDDLE  ALT=\".8%2A21+=+16.8\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters alcohol<BR>\n" );
document.write( "I can now write the equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.3x+%2B+16.8%29%2F%2821+%2B+x%29+=+.6 ALIGN=MIDDLE  ALT=\"%28.3x+%2B+16.8%29%2F%2821+%2B+x%29+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.3x+%2B+16.8+=+.6%2A%2821+%2B+x%29 ALIGN=MIDDLE  ALT=\".3x+%2B+16.8+=+.6%2A%2821+%2B+x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.3x+%2B+16.8+=+12.6+%2B+.6x ALIGN=MIDDLE  ALT=\".3x+%2B+16.8+=+12.6+%2B+.6x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.3x+=+16.8+-+12.6 ALIGN=MIDDLE  ALT=\".3x+=+16.8+-+12.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.3x+=+4.2 ALIGN=MIDDLE  ALT=\".3x+=+4.2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+14 ALIGN=MIDDLE  ALT=\"x+=+14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "14 liters of the 30% solution must be added<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.3x+%2B+16.8%29%2F%2821+%2B+x%29+=+.6 ALIGN=MIDDLE  ALT=\"%28.3x+%2B+16.8%29%2F%2821+%2B+x%29+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.3%2A14+%2B+16.8%29%2F%2821+%2B+14%29+=+.6 ALIGN=MIDDLE  ALT=\"%28.3%2A14+%2B+16.8%29%2F%2821+%2B+14%29+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284.2+%2B+16.8%29%2F35+=+.6 ALIGN=MIDDLE  ALT=\"%284.2+%2B+16.8%29%2F35+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21%2F35+=+.6 ALIGN=MIDDLE  ALT=\"21%2F35+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21+=+.6%2A35 ALIGN=MIDDLE  ALT=\"21+=+.6%2A35\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21+=+21 ALIGN=MIDDLE  ALT=\"21+=+21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );