document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=96439>Question 96439</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help! I have tried for a while, but I can't come up with the correct solution for these problem types:(not from a book)  <BR>\n" );
document.write( "Roberto invested some money at 7%, and then invested $3000 more than twice this amount at 12%. His total annual income from the two investments was $4700. How much was invested at 12%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #70210 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=70210\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .07x+.12(x+3000)=4700<BR>\n" );
document.write( ".07x+.12x+360=4700<BR>\n" );
document.write( ".19x=4700-360<BR>\n" );
document.write( ".19x=4340<BR>\n" );
document.write( "x=4340/.19<BR>\n" );
document.write( "x=$22,842 invested @7%<BR>\n" );
document.write( "22,842+3000=$25,842 invested @ 12%<BR>\n" );
document.write( "proof<BR>\n" );
document.write( ".07*22,842+25842*.12=4700<BR>\n" );
document.write( "1598.95+3101.05=4700<BR>\n" );
document.write( "4700=4700\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );