document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890158>Question 890158</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean of 5 numbers is 11. When a sixth number is 12. Find the sixth number.<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 #538753 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=538753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sum%28x%5Bi%5D%2C+i+=+1+%2C5%29%29%2F5+=+11 ALIGN=MIDDLE  ALT=\"%28sum%28x%5Bi%5D%2C+i+=+1+%2C5%29%29%2F5+=+11\"   DISABLED_style= \"max-width:90%; height:auto;\" > by the given \r<BR>\n" );
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document.write( "==><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sum%28x%5Bi%5D%2C+i=1%2C5%29+=+55 ALIGN=MIDDLE  ALT=\"sum%28x%5Bi%5D%2C+i=1%2C5%29+=+55\"   DISABLED_style= \"max-width:90%; height:auto;\" > after cross-multiplication\r<BR>\n" );
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document.write( "==><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sum%28x%5Bi%5D%2C+i=1%2C5%29%2B+x%5B6%5D+=+55%2B+x%5B6%5D ALIGN=MIDDLE  ALT=\"sum%28x%5Bi%5D%2C+i=1%2C5%29%2B+x%5B6%5D+=+55%2B+x%5B6%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sum%28x%5Bi%5D%2C+i=1%2C5%29%2B+x%5B6%5D%29%2F6+=+%2855%2B+x%5B6%5D%29%2F6+=+12 ALIGN=MIDDLE  ALT=\"%28sum%28x%5Bi%5D%2C+i=1%2C5%29%2B+x%5B6%5D%29%2F6+=+%2855%2B+x%5B6%5D%29%2F6+=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" > after dividing both sides by 6\r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=55+%2B+x%5B6%5D+=+72 ALIGN=MIDDLE  ALT=\"55+%2B+x%5B6%5D+=+72\"   DISABLED_style= \"max-width:90%; height:auto;\" > after cross-multiplication.\r<BR>\n" );
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document.write( "Hence <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5B6%5D+=+17 ALIGN=MIDDLE  ALT=\"x%5B6%5D+=+17\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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