document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=764320>Question 764320</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the average of 5 members family age is 18 years . if grandfather is included the average is 12 years. what is the age of grandfather? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #465349 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=465349\">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=%285%2A18%2Bg%29%2F6=12 ALIGN=MIDDLE  ALT=\"%285%2A18%2Bg%29%2F6=12\"   DISABLED_style= \"max-width:90%; height:auto;\" >, find g.\r<BR>\n" );
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document.write( "Why would a grandfather, of expected age ABOVE 30, make a decrease of the average age for the group when the average age without grandfather is already younger?  The problem description just makes no realistic sense.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2A18%2Bg=6%2A12 ALIGN=MIDDLE  ALT=\"5%2A18%2Bg=6%2A12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=g=6%2A12-5%2A18=2%2A3%2A2%2A2%2A3-5%2A2%2A3%2A3=2%2A2%2A2%2A3%2A3-2%2A3%2A3%2A5 ALIGN=MIDDLE  ALT=\"g=6%2A12-5%2A18=2%2A3%2A2%2A2%2A3-5%2A2%2A3%2A3=2%2A2%2A2%2A3%2A3-2%2A3%2A3%2A5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=g=2%2A3%2A3%284-5%29%3C0 ALIGN=MIDDLE  ALT=\"g=2%2A3%2A3%284-5%29%3C0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The problem description is wrong. </SPAN>\n" );
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