document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1078685>Question 1078685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> birdseed cost $0.69 a pound and sunflower costs $0.99 a pound, they want to make a 50 pound mixture of them that sells for $0.91 per pound. how many pounds of birdseed And sunflower seed should they use<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #693150 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=693150\">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;\" > = pounds of birdseed 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;\" > = pounds of sunflower seed 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+=+50+ ALIGN=MIDDLE  ALT=\"+a+%2B+b+=+50+\"   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+.69a+%2B+.99b++%29+%2F+50+=+.91+ ALIGN=MIDDLE  ALT=\"+%28+.69a+%2B+.99b++%29+%2F+50+=+.91+\"   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=+.69a+%2B+.99b+=+45.5+ ALIGN=MIDDLE  ALT=\"+.69a+%2B+.99b+=+45.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+69a+%2B+99b+=+4550+ ALIGN=MIDDLE  ALT=\"+69a+%2B+99b+=+4550+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "Multiply both sides of (1) by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+69+ ALIGN=MIDDLE  ALT=\"+69+\"   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=+69a+%2B+99b+=+4550+ ALIGN=MIDDLE  ALT=\"+69a+%2B+99b+=+4550+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-69a+-+69b+=+-3450+ ALIGN=MIDDLE  ALT=\"+-69a+-+69b+=+-3450+\"   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=+30b+=+1100+ ALIGN=MIDDLE  ALT=\"+30b+=+1100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+36.67+ ALIGN=MIDDLE  ALT=\"+b+=+36.67+\"   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+36.67+=+50+ ALIGN=MIDDLE  ALT=\"+a+%2B+36.67+=+50+\"   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+=+13.33+ ALIGN=MIDDLE  ALT=\"+a+=+13.33+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "13.33 pounds of birdseed are needed<BR>\n" );
document.write( "36.67 pounds of sunflower seed 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+.69a+%2B+.99b++%29+%2F+50+=+.91+ ALIGN=MIDDLE  ALT=\"+%28+.69a+%2B+.99b++%29+%2F+50+=+.91+\"   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+.69%2A13.33+%2B+.99%2A36.67++%29+%2F+50+=+.91+ ALIGN=MIDDLE  ALT=\"+%28+.69%2A13.33+%2B+.99%2A36.67++%29+%2F+50+=+.91+\"   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+9.1977+%2B+36.3033+%29+%2F+50+=+.91+ ALIGN=MIDDLE  ALT=\"+%28+9.1977+%2B+36.3033+%29+%2F+50+=+.91+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+45.501+=+.91%2A50+ ALIGN=MIDDLE  ALT=\"+45.501+=+.91%2A50+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+45.501+=+45.5+ ALIGN=MIDDLE  ALT=\"+45.501+=+45.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );