document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117341>Question 1117341</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Last year your town invested a total of $25,000 into two separate funds. The return on one fund was 4% and the return on the other was 6%. If the town earned a total of $1,300 interest, how much money was invested in each fund? <BR>\n" );
document.write( "What variable will you use? What will they represent?<BR>\n" );
document.write( "What equations can u write to model this situation?<BR>\n" );
document.write( "How can you use a matrix to solve this system </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #732395 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=732395\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Last year your town invested a total of $25,000 into two separate funds. The return on one fund was 4% and the return on the other was 6%. If the town earned a total of $1,300 interest, how much money was invested in each fund?Q<BR>\n" );
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document.write( "Quantity Equation:: f + s = 25000<BR>\n" );
document.write( "Interest Equation:: 4f + 6s = 130000<BR>\n" );
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document.write( "What variable will you use? What will they represent?<BR>\n" );
document.write( "f is the amount of 4% money<BR>\n" );
document.write( "s is the amount of 6% money<BR>\n" );
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document.write( "What equations can u write to model this situation?<BR>\n" );
document.write( "See above.<BR>\n" );
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document.write( "How can you use a matrix to solve this system <BR>\n" );
document.write( "The coefficient matrix is 2 by 2<BR>\n" );
document.write( "Find it's inverse and multiply the column vector [25000 130000]<BR>\n" );
document.write( "to see the values of \"f\" and \"s\".<BR>\n" );
document.write( "f = $10000 ; s = $15000<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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