document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=51886>Question 51886</A>: <I><SPAN STYLE=\"word-break: break-all;\"> rellie invests 12,000 pesos. A part of it earns 10% interrest annually ans the rest earns 9% interest annually. his annual income from these investments is 1, 130 pesos. how much is 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 #34604 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=34604\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the standard form of a line.<BR>\n" );
document.write( "Ax+By=c<BR>\n" );
document.write( ".10x+.09(12,000-x)=1130<BR>\n" );
document.write( ".10x+1080-.09x=1130 [Solve for x]<BR>\n" );
document.write( "-.01x=1130-1080<BR>\n" );
document.write( "x=5000<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Y=12,000-5000=7,000<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Check by plugging the value of x and y back into the original equation.<BR>\n" );
document.write( ".10(5000)+.09(12,000-(5000))=1130<BR>\n" );
document.write( "500+.09(7000)=1130<BR>\n" );
document.write( "500+630=1130<BR>\n" );
document.write( "1130=1130 [Checks out]<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );