document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=901189>Question 901189</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mardi recieved an inheritance of $70,000. She invested part at 10% and deposited the remainder in tax-free at 7%. Her total annual income from the investmentswas $6400. Find the amount invested at 10%. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #546547 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=546547\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=70000,<BR>\n" );
document.write( "0.1*x+0.07*y=6400<BR>\n" );
document.write( "x=70000-y<BR>\n" );
document.write( "0.1*(70000-y)+0.07*y=6400<BR>\n" );
document.write( "7000-0.1y+0.07*y=6400<BR>\n" );
document.write( "-0.03*y=-600<BR>\n" );
document.write( "y=20000 at 7%<BR>\n" );
document.write( "x=70000-y<BR>\n" );
document.write( "x=50000 at 10%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.1*50000+0.07*20000=6400<BR>\n" );
document.write( "5000+1400=6400<BR>\n" );
document.write( "6400=6400<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );