document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=662945>Question 662945</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One year a couple invested a total of $10,000 in two projects. The first investment , a mini mall , made a 6% profit. The other profit investment, a skateboard park, made 12% profit. If their investments made $960 , how much 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 #412623 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=412623\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y = 10000<BR>\n" );
document.write( ".06(x) + .12(y) = 960<BR>\n" );
document.write( "Substitute into the second equation<BR>\n" );
document.write( ".06(10000-y) + .12y = 960<BR>\n" );
document.write( "600 - .06y + .12y = 960<BR>\n" );
document.write( "600 + .06y = 960<BR>\n" );
document.write( ".06y = 960 - 600<BR>\n" );
document.write( ".06y = 360<BR>\n" );
document.write( "y = $6,000 at 12%<BR>\n" );
document.write( "x = 10000 - 6000 = $4,000 at 6%<BR>\n" );
document.write( "Proof<BR>\n" );
document.write( ".06(4000) + .12(6000)<BR>\n" );
document.write( "240 + 720 = 960<BR>\n" );
document.write( ".........................<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );