document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=308783>Question 308783</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Martin purchased company ABC's stock and invested the balance in his money market account. ABC's stock yielded 10% last year and his money market account yielded 7% last year. If Martin's initial investments amount to $21,000 and the annual income is $1680, how much money is invested in stock and how much is invested in his money market account? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #220784 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=220784\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Martin purchased company ABC's stock and invested the balance in his money market account. ABC's stock yielded 10% last year and his money market account yielded 7% last year. If Martin's initial investments amount to $21,000 and the annual income is $1680, how much money is invested in stock and how much is invested in his money market account?<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "Quantity: S + M = 21000 dollars<BR>\n" );
document.write( "Interest:0.10S + 0.07M = 1680 dollars<BR>\n" );
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document.write( "Multiply thru Quantity by 10<BR>\n" );
document.write( "Multiply thru Interest by 100<BR>\n" );
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document.write( "10S + 10M = 210000<BR>\n" );
document.write( "10S + 7 M = 168000<BR>\n" );
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document.write( "Subtract 2nd from 1st and solve for \"M\":<BR>\n" );
document.write( "3M = 42000<BR>\n" );
document.write( "M = 14000 (amt invested in money market<BR>\n" );
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document.write( "Since S + M = 21000, S = 7000 (amt invested in stocks)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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