document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1067513>Question 1067513</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A printer has ink that is 3% cobalt blue color and ink that is 7% cobalt blue color. How many ounces of each ink are needed to make 2 gallons (256 ounces) of ink that is 5% cobalt blue color? \r<BR>\n" );
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document.write( "3% cobalt blue color_________oz     <BR>\n" );
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document.write( "7% cobalt blue color__________oz     <BR>\n" );
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document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #682682 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=682682\">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=+a+ ALIGN=MIDDLE  ALT=\"+a+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = ounces of 3% cobalt blue color needed<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+ ALIGN=MIDDLE  ALT=\"+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = ounces of 7% cobalt blue color needed<BR>\n" );
document.write( "---------------------------------------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+b+=+256+ ALIGN=MIDDLE  ALT=\"+a+%2B+b+=+256+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.03a+%2B+.07b+%29+%2F+256+=+.05+ ALIGN=MIDDLE  ALT=\"+%28+.03a+%2B+.07b+%29+%2F+256+=+.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.03a+%2B+.07b+=+.05%2A256+ ALIGN=MIDDLE  ALT=\"+.03a+%2B+.07b+=+.05%2A256+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.03a+%2B+.07b+=+12.8+ ALIGN=MIDDLE  ALT=\"+.03a+%2B+.07b+=+12.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  <BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3a+%2B+7b+=+1280+ ALIGN=MIDDLE  ALT=\"+3a+%2B+7b+=+1280+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides of (1) by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3+ ALIGN=MIDDLE  ALT=\"+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "and subtract (1) from (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3a+%2B+7b+=+1280+ ALIGN=MIDDLE  ALT=\"+3a+%2B+7b+=+1280+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-3a+-+3b+=+-768+ ALIGN=MIDDLE  ALT=\"+-3a+-+3b+=+-768+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4b+=+512+ ALIGN=MIDDLE  ALT=\"+4b+=+512+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+128+ ALIGN=MIDDLE  ALT=\"+b+=+128+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+b+=+256+ ALIGN=MIDDLE  ALT=\"+a+%2B+b+=+256+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+128+=+256+ ALIGN=MIDDLE  ALT=\"+a+%2B+128+=+256+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+128+ ALIGN=MIDDLE  ALT=\"+a+=+128+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "128 ounces of 3% cobalt blue color are needed<BR>\n" );
document.write( "128 ounces of 7% cobalt blue color are needed<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.03a+%2B+.07b+%29+%2F+256+=+.05+ ALIGN=MIDDLE  ALT=\"+%28+.03a+%2B+.07b+%29+%2F+256+=+.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.03%2A128+%2B+.07%2A128+%29+%2F+256+=+.05+ ALIGN=MIDDLE  ALT=\"+%28+.03%2A128+%2B+.07%2A128+%29+%2F+256+=+.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+3.84+%2B+8.96+%29+%2F+256+=+.05+ ALIGN=MIDDLE  ALT=\"+%28+3.84+%2B+8.96+%29+%2F+256+=+.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12.8+=+.05%2A256+ ALIGN=MIDDLE  ALT=\"+12.8+=+.05%2A256+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12.8+=+12.8+ ALIGN=MIDDLE  ALT=\"+12.8+=+12.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );