document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=926636>Question 926636</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two certificates of deposits (CDs) pay interest at rates that differ by 4%. Money invested for 1 year in the first CD earns $50 interest. The same amount invested in the second CD earns $90. Find the two rates of interest. Thank you so much for whoever takes the time to help me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #562384 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=562384\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> They don't say that it's compound interest, so<BR>\n" );
document.write( "it must be a simple interest problem<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r+ ALIGN=MIDDLE  ALT=\"+r+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the rate for the 1st CD<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "The 2nd CD earns $40 more, so it must be<BR>\n" );
document.write( "a higher rate, so it is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r+%2B+.04+ ALIGN=MIDDLE  ALT=\"+r+%2B+.04+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+ ALIGN=MIDDLE  ALT=\"+A+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = amount invested at each rate<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Equation for1st rate:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A%2Ar=+50++ ALIGN=MIDDLE  ALT=\"+A%2Ar=+50++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation for 2nd rate:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A%2A%28+r+%2B+.04+%29+=+90+ ALIGN=MIDDLE  ALT=\"+A%2A%28+r+%2B+.04+%29+=+90+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+50%2Fr+ ALIGN=MIDDLE  ALT=\"+A+=+50%2Fr+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+90%2F%28+r+%2B+.04+%29+ ALIGN=MIDDLE  ALT=\"+A+=+90%2F%28+r+%2B+.04+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "I can say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50%2Fr+=+90%2F%28+r+%2B+.04+%29+ ALIGN=MIDDLE  ALT=\"+50%2Fr+=+90%2F%28+r+%2B+.04+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50%2A%28+r+%2B+.04+%29+=+90r+ ALIGN=MIDDLE  ALT=\"+50%2A%28+r+%2B+.04+%29+=+90r+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50r+%2B+2+=+90r+ ALIGN=MIDDLE  ALT=\"+50r+%2B+2+=+90r+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+40r+=+2+ ALIGN=MIDDLE  ALT=\"+40r+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r+=+1%2F20+ ALIGN=MIDDLE  ALT=\"+r+=+1%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r+=+.05+ ALIGN=MIDDLE  ALT=\"+r+=+.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r+%2B+.04+=+.09+ ALIGN=MIDDLE  ALT=\"+r+%2B+.04+=+.09+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The rates are 5% and 9%<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+50%2Fr+ ALIGN=MIDDLE  ALT=\"+A+=+50%2Fr+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+50%2F.05+ ALIGN=MIDDLE  ALT=\"+A+=+50%2F.05+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+1000+ ALIGN=MIDDLE  ALT=\"+A+=+1000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+90%2F%28+r+%2B+.04+%29+ ALIGN=MIDDLE  ALT=\"+A+=+90%2F%28+r+%2B+.04+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+90%2F%28+.05+%2B+.04+%29+ ALIGN=MIDDLE  ALT=\"+A+=+90%2F%28+.05+%2B+.04+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+90%2F.09+ ALIGN=MIDDLE  ALT=\"+A+=+90%2F.09+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+A+=+1000+ ALIGN=MIDDLE  ALT=\"+A+=+1000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );