document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177072>Question 177072</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321501080/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Mike invested $6000 for one year. He invested part of it at 9% and the rest at 11%. At the end of the year he earned $624 in interest. How much did he invest 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 #132142 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=132142\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .11x+.09(6000-x)=624<BR>\n" );
document.write( ".11x+540-.09x=624<BR>\n" );
document.write( ".02x=624-540<BR>\n" );
document.write( ".02x=84<BR>\n" );
document.write( "x=84/.02<BR>\n" );
document.write( "x=4,200 invested @ 11%<BR>\n" );
document.write( "6,000-4,200=1,800 invested @ 9%<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".11*4,200+.09*1,800=624<BR>\n" );
document.write( "462+162=624<BR>\n" );
document.write( "624=624 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );