document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=113012>Question 113012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Roberto invested some money at 7%, and then invested $2000 more than twice this amount at 11%. His total annual income from the two investments was $3990. How much was invested at 11%?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #82319 by </B><A HREF=/tutors/aboutme.mpl?userid=SHUgrad05><B>SHUgrad05(58)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=SHUgrad05><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=82319\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .07x+.11y=3990<BR>\n" );
document.write( "Let x=amount invested at 7%<BR>\n" );
document.write( "Let y=amount invested at 11%; y=2x+2000\r<BR>\n" );
document.write( "\n" );
document.write( ".07x+(2x+2000).11=3990<BR>\n" );
document.write( ".07x+.22x+220=3990<BR>\n" );
document.write( ".07x+.22x=3770<BR>\n" );
document.write( ".29x=3770<BR>\n" );
document.write( "x=$13,000-> plug back into original equation\r<BR>\n" );
document.write( "\n" );
document.write( ".07(13,000)+.11y=3990<BR>\n" );
document.write( "910+.11y=3990<BR>\n" );
document.write( ".11y=3080<BR>\n" );
document.write( "y=$28,000\r<BR>\n" );
document.write( "\n" );
document.write( "$28,000 invested at 11%\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );