document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1158613>Question 1158613</A>: <I><SPAN STYLE=\"word-break: break-all;\"> different amounts are invested at 10%, 11%, and 12% yearly interest. the amount invested at 11% is $300 more than the amount invested at 10% and the total yearly income from all 3 investments is $324. a total of $2900 is invested. find the amount invested at each rate. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #781570 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=781570\">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;\" > = amount invested @ 10%<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;\" > = amount invested @ 11%<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+ ALIGN=MIDDLE  ALT=\"+c+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = amount invested @ 12%<BR>\n" );
document.write( "------------------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I+=+P%2Ar%2At+ ALIGN=MIDDLE  ALT=\"+I+=+P%2Ar%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+a%2A.10%2A1+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+a%2A.10%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(b) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+b%2A.11%2A1+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+b%2A.11%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(c) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B3%5D+=+c%2A.12%2A1+ ALIGN=MIDDLE  ALT=\"+I%5B3%5D+=+c%2A.12%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+a+%2B+300+ ALIGN=MIDDLE  ALT=\"+b+=+a+%2B+300+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+324+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+324+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+b+%2B+c+=+2900+ ALIGN=MIDDLE  ALT=\"+a+%2B+b+%2B+c+=+2900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------------------------<BR>\n" );
document.write( "Add (a), (b), and (c)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1a+%2B+.11b+%2B+.12c+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1a+%2B+.11b+%2B+.12c+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+324+=+.1a+%2B+.11b+%2B+.12c+ ALIGN=MIDDLE  ALT=\"+324+=+.1a+%2B+.11b+%2B+.12c+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10a+%2B+11b+%2B+12c+=+32400+%7D%7D%0D%0A---------------------------------------------------%0D%0A%7B%7B%7B+10a+%2B+11b+%2B+12c+=+32400+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10a+%2B+11%2A%28+a+%2B+300+%29+%2B+12c+=+32400+ ALIGN=MIDDLE  ALT=\"+10a+%2B+11%2A%28+a+%2B+300+%29+%2B+12c+=+32400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10a+%2B+11a+%2B+3300+%2B+12c+=+32400+ ALIGN=MIDDLE  ALT=\"+10a+%2B+11a+%2B+3300+%2B+12c+=+32400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+21a+%2B+12c+=+29100+ ALIGN=MIDDLE  ALT=\"+21a+%2B+12c+=+29100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+b+%2B+c+=+2900+ ALIGN=MIDDLE  ALT=\"+a+%2B+b+%2B+c+=+2900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+%2B+a+%2B+300+%2B+c+=+2900+ ALIGN=MIDDLE  ALT=\"+a+%2B+a+%2B+300+%2B+c+=+2900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2a+%2B+c+=+2600+ ALIGN=MIDDLE  ALT=\"+2a+%2B+c+=+2600+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12+ ALIGN=MIDDLE  ALT=\"+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "Do this subtraction:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+24a+%2B+12c+=+31200+ ALIGN=MIDDLE  ALT=\"+24a+%2B+12c+=+31200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-+21a+-+12c+=+-29100+ ALIGN=MIDDLE  ALT=\"-+21a+-+12c+=+-29100+\"   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=+3a+=+2100+ ALIGN=MIDDLE  ALT=\"+3a+=+2100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+700+ ALIGN=MIDDLE  ALT=\"+a+=+700+\"   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=+b+=+a+%2B+300+ ALIGN=MIDDLE  ALT=\"+b+=+a+%2B+300+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+700+%2B+300+ ALIGN=MIDDLE  ALT=\"+b+=+700+%2B+300+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+1000+ ALIGN=MIDDLE  ALT=\"+b+=+1000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2a+%2B+c+=+2600+ ALIGN=MIDDLE  ALT=\"+2a+%2B+c+=+2600+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2A700+%2B+c+=+2600+ ALIGN=MIDDLE  ALT=\"+2%2A700+%2B+c+=+2600+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+1200+ ALIGN=MIDDLE  ALT=\"+c+=+1200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "$700 invested @ 10%<BR>\n" );
document.write( "$1,000 invested @ 11%<BR>\n" );
document.write( "$1,200 invested @ 12%<BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1a+%2B+.11b+%2B+.12c+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1a+%2B+.11b+%2B+.12c+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1%2A700+%2B+.11%2A1000+%2B+.12%2A1200+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+.1%2A700+%2B+.11%2A1000+%2B+.12%2A1200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+70+%2B+110+%2B+144+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+70+%2B+110+%2B+144+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+324+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+%2B+I%5B3%5D+=+324+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( "check my math<BR>\n" );
document.write( " \r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );