document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=331859>Question 331859</A>: <I><SPAN STYLE=\"word-break: break-all;\"> roberto invested some money at 7%, and then invested $3000 more than twice this ammount at 9%. his total annual income for two investments was $3200. how much was invested at 9% </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #237922 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=237922\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> amount invested be x at 7%<BR>\n" );
document.write( "2x+3000 @ 9%<BR>\n" );
document.write( "total interest for 1 year =3200\r<BR>\n" );
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document.write( "0.07x+0.09*(2x+3000)=3200<BR>\n" );
document.write( "0.07x+0.18x+270=3200<BR>\n" );
document.write( "0.25x=3200-270<BR>\n" );
document.write( "0.25x=2930<BR>\n" );
document.write( "x=2930/0.25<BR>\n" );
document.write( "$11,720 at 7%<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2x+3000<BR>\n" );
document.write( "2*11720+300<BR>\n" );
document.write( "23,440+300<BR>\n" );
document.write( "=$23,740 @ 9%\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );