document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190386>Question 190386</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073533520/algebrahomeworkh>algebra for college students</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Bob invested some money at 5% simple interest and some at 9% simple interest.  The amount invested at the higher rate was twice the amount invested at the lower rate.  If the total interst on the investments for 1 year was $920, then how much did he invest at each rate?\r<BR>\n" );
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document.write( "I know what the answer is but I have tried every forumla and can't figure out where the numbers come from.  The anser is $4000 @ 5% and $8000 @ 9%.  Your help is greatly appreciated! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142882 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=142882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Tahoma\" size=1.5><BR>\n" );
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document.write( "Let <font color=blue> x </font>= amount inv. @ 5%<BR>\n" );
document.write( "And, <font color=blue> 2x </font>= amount for 9% (twice that of lower rate 5%)\r<BR>\n" );
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document.write( "Then it follows, <BR>\n" );
document.write( "Interest on 5% + Interest on 9% = $920<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.05x%2B0.09%282x%29=920 ALIGN=MIDDLE  ALT=\"0.05x%2B0.09%282x%29=920\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.05x%2B0.18x=920 ALIGN=MIDDLE  ALT=\"0.05x%2B0.18x=920\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.23x=920 ALIGN=MIDDLE  ALT=\"0.23x=920\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%280.23%29x%2Fcross%280.23%29=cross%28920%294000%2Fcross%280.23%29 ALIGN=MIDDLE  ALT=\"cross%280.23%29x%2Fcross%280.23%29=cross%28920%294000%2Fcross%280.23%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<font color=blue>x = $4,000.00 </font>, amount for 5%\r<BR>\n" );
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document.write( "Also, 2*($4,000) = <font color=blue> $8,000.00 </font>, amount for 9%\r<BR>\n" );
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document.write( "Let's check,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.05%284000%29%2B0.09%288000%29=920 ALIGN=MIDDLE  ALT=\"0.05%284000%29%2B0.09%288000%29=920\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=200%2B720=920 ALIGN=MIDDLE  ALT=\"200%2B720=920\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=920=920 ALIGN=MIDDLE  ALT=\"920=920\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Jojo</font> </SPAN>\n" );
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