document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=179560>Question 179560</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.	Walt made an extra $12,000 last year from a part-time job. He invested part of the money at 7% and the rest at 9%. He made a total of $970 in interest. How much was invested at 7%?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #134505 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=134505\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = the amount Walt invested at 7%, so the remainder ($12000-x) was invested at 9%.<BR>\n" );
document.write( "The interest earned on these two amounts can be expressed as:<BR>\n" );
document.write( "(7%)(x) + (9%)($12000-x) and the sum of these two amounts is given as $970.00<BR>\n" );
document.write( "Now you can write the equation that will allow you to so;ve for x, the amount invested at 7%.<BR>\n" );
document.write( "First, change the percentages to their decimal equivalents:<BR>\n" );
document.write( "(7% = 0.07) and (9% = 0.09)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.07x%2B0.09%2812000-x%29+=+970 ALIGN=MIDDLE  ALT=\"0.07x%2B0.09%2812000-x%29+=+970\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplifying this, you'll get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.07x%2B1080-0.09x=+970 ALIGN=MIDDLE  ALT=\"0.07x%2B1080-0.09x=+970\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine the x-terms.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-0.02x%2B1080+=+970 ALIGN=MIDDLE  ALT=\"-0.02x%2B1080+=+970\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 1080 from both sides of the equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-0.02x+=+-110 ALIGN=MIDDLE  ALT=\"-0.02x+=+-110\"   DISABLED_style= \"max-width:90%; height:auto;\" > Finally, divide both sides by -0.02<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+5500%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+5500%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "$5,500.00 was invested at 7% while $12000-$5500 = $6,500.00 was invested at 9% </SPAN>\n" );
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