document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=389825>Question 389825</A>: <I><SPAN STYLE=\"word-break: break-all;\"> on January 1, Mr. Warner and his son jointly invest a sum of money at an annual rate of 6.75%. On January 1 of the following year, their total investment is worth $5978. If Mr. Warner invested $4500 of his own money, how much money did his son invest?\r<BR>\n" );
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document.write( "I know the answer is $1100 but I don't know why it's $1100???\r<BR>\n" );
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document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #276358 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=276358\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > = amount his son invested<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "Mr Warner invested <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4500 ALIGN=MIDDLE  ALT=\"4500\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "After 1 year,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4500+%2B+x+%2B+.0675%2A%284500+%2B+x%29+=+5978 ALIGN=MIDDLE  ALT=\"4500+%2B+x+%2B+.0675%2A%284500+%2B+x%29+=+5978\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4500+%2B+x+%2B+303.75+%2B+.0675x+=+5978 ALIGN=MIDDLE  ALT=\"4500+%2B+x+%2B+303.75+%2B+.0675x+=+5978\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0675x+=+5978+-+4500+-+303.75 ALIGN=MIDDLE  ALT=\"1.0675x+=+5978+-+4500+-+303.75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0675x+=+5978+-+4803.75 ALIGN=MIDDLE  ALT=\"1.0675x+=+5978+-+4803.75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0675x+=+1174.25 ALIGN=MIDDLE  ALT=\"1.0675x+=+1174.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+1100 ALIGN=MIDDLE  ALT=\"x+=+1100\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "His son invested $1,100<BR>\n" );
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