document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=442265>Question 442265</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I solve this problem?\r<BR>\n" );
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document.write( "A $132,000 trust is to be invested in bonds paying 6%, CDs paying 5%, and mortgages paying 7%.  The bond and CD investment together must equal the mortgage investment.  To earn a $8420 annual income from the investments, how much should the bank invest in bonds? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #305082 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=305082\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Bonds --- 6% ----- x<BR>\n" );
document.write( "CD's -----5%-------y<BR>\n" );
document.write( "Mortages--7%------x+y<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Interest to be earned = $8420<BR>\n" );
document.write( "Investment = 132,000<BR>\n" );
document.write( "x+y+x+y = 132,000<BR>\n" );
document.write( "2x+2y=132000<BR>\n" );
document.write( "x+y = 66,000.........1<BR>\n" );
document.write( "6x+5y+7(x+y) = 8420*100<BR>\n" );
document.write( "6x+5y+7x+7y=8420*100<BR>\n" );
document.write( "13x+12y=8420*100......2<BR>\n" );
document.write( ".........<BR>\n" );
document.write( "x+y=66000	.............1	<BR>\n" );
document.write( "13x+12y=842000	.............2	<BR>\n" );
document.write( "Eliminate y								<BR>\n" );
document.write( "multiply (1)by 	-12						<BR>\n" );
document.write( "Multiply (2) by 	1						<BR>\n" );
document.write( "-12x-12y	=-792000		<BR>\n" );
document.write( "13x+12y=	842000		<BR>\n" );
document.write( "Add the two equations								<BR>\n" );
document.write( "x=50000	investment in Bonds	<BR>\n" );
document.write( "plug value of x	in (1)				<BR>\n" );
document.write( "x	+y	=	66000		<BR>\n" );
document.write( "50000	+y	=	66000		<BR>\n" );
document.write( "y	=	66000		-50000<BR>\n" );
document.write( "y	=	16000		<BR>\n" );
document.write( "y	=	16000  Investment in CD's\r<BR>\n" );
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document.write( "Mortage = 66,000		<BR>\n" );
document.write( " </SPAN>\n" );
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