document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=560131>Question 560131</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have story problems I have to get an equation for and solve.  I try to draw out tables to help me figure out the equations but I have a rough time finding the right spot to put everything in.  Can you help me?\r<BR>\n" );
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document.write( "Here is the problem:\r<BR>\n" );
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document.write( "A certain sum of money is invested at 6.35%, and $4000 more than that amount is invested at 7.28%.  If the annual interest from the two investments is $972.70, how much was invested at 6.35%?\r<BR>\n" );
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document.write( "My table I made using the formula I=P*R*T\r<BR>\n" );
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document.write( "              I   =        P   *    R     *     T\r<BR>\n" );
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document.write( "INVEST 1      635X         X        635          1\r<BR>\n" );
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document.write( "INVEST 2   728(4000-X)    4000-X                 1\r<BR>\n" );
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document.write( "TOTAL          972.70      4000 \r<BR>\n" );
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document.write( "Can you please explain what I did wrong and how to do it right and show me what the equation is?\r<BR>\n" );
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document.write( "Thanks!!  :)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #363703 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=363703\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A certain sum of money is invested at 6.35%, and $4000 more than that amount is invested at 7.28%.<BR>\n" );
document.write( " If the annual interest from the two investments is $972.70, how much was invested at 6.35%? <BR>\n" );
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document.write( "Let's do it this way<BR>\n" );
document.write( "Let x = amt invested at 6.35%<BR>\n" );
document.write( "then it says,\"$4000 more than that amount, is invested at 7.28%.\" therefore<BR>\n" );
document.write( "(x+4000) = amt invested at 7.28%<BR>\n" );
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document.write( ".0635x + .0728(x+4000) = 972.70; this is the equation you want<BR>\n" );
document.write( ".0635x + .0728x + 291.20 = 972.70<BR>\n" );
document.write( ".0635x + .0728x  = 972.70 - 291.20<BR>\n" );
document.write( ".1363x = 681.50<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=681.5%2F.1363 ALIGN=MIDDLE  ALT=\"681.5%2F.1363\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = $5000 invested at 6.35%<BR>\n" );
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document.write( "Check the solution by finding the amt invested on each one<BR>\n" );
document.write( ".0635*5000 = 317.50<BR>\n" );
document.write( ".0728*9000 = 655.20<BR>\n" );
document.write( "===================<BR>\n" );
document.write( "total int: = 972.70<BR>\n" );
document.write( " </SPAN>\n" );
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