document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=243625>Question 243625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Leos invested part of $12,000 at 4% simple interest per year and the rest at 6% simple interest per year. The total interest for one year was at most $640. Find the least amount that could have been invested at 4%. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #178498 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=178498\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .06x+.04(12,000-x)<=640<BR>\n" );
document.write( ".06x+480-.04x<=640<BR>\n" );
document.write( ".02x<=640-480<BR>\n" );
document.write( ".02x<=160<BR>\n" );
document.write( "x<=160/.02<BR>\n" );
document.write( "x=$8,000 amount invested @ 6%.<BR>\n" );
document.write( "12,000-8,000=$4,000 amount invested @ 4%<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".06*8,000+.04*4,000<=640<BR>\n" );
document.write( "480+160<=640<BR>\n" );
document.write( "640<=640 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );