document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=155493>Question 155493</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780495117940/algebrahomeworkh>Intermediate Algebra </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Investing. A man invested $14,000, some at 7% and some at 10% annual interest. The annual income from these investments was $1,280. How much did e 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 #114617 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=114617\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .10x+.07(14,000-x)=1,280<BR>\n" );
document.write( ".10x+980-.07x=1,280<BR>\n" );
document.write( ".03x=1,280-980<BR>\n" );
document.write( ".03x=300<BR>\n" );
document.write( "x=300/.03<BR>\n" );
document.write( "x=10,000 invested @ 10%<BR>\n" );
document.write( "14,000-10,000=4,000 invested @ 7%<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".10*10,000+.07*4,000=1,280<BR>\n" );
document.write( "1,000+280=1,280<BR>\n" );
document.write( "1,280=1,280 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );