document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=817284>Question 817284</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A grandfather has lived as many years as his grandson has lived months. His son has lived as many weeks as his grandson has lived days. If you added their ages, you would get 120 years. How old is the grandfather?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #492056 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=492056\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A grandfather has lived as many years as his grandson has lived months.<BR>\n" );
document.write( " His son has lived as many weeks as his grandson has lived days.<BR>\n" );
document.write( " If you added their ages, you would get 120 years. How old is the grandfather?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let x = grandfather's age<BR>\n" );
document.write( "let y = son's age<BR>\n" );
document.write( "let z = grandson's age<BR>\n" );
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document.write( "\"A grandfather has lived as many years as his grandson has lived months.\"<BR>\n" );
document.write( "x = 12z<BR>\n" );
document.write( ":<BR>\n" );
document.write( "\"His son has lived as many weeks as his grandson has lived days.\"<BR>\n" );
document.write( "52y = 365z<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=365%2F52 ALIGN=MIDDLE  ALT=\"365%2F52\"   DISABLED_style= \"max-width:90%; height:auto;\" >z<BR>\n" );
document.write( "y ~ 7z<BR>\n" );
document.write( ":<BR>\n" );
document.write( "\"If you added their ages, you would get 120 years.\"<BR>\n" );
document.write( "x + y + z = 120<BR>\n" );
document.write( "replace x with 12z; replace y with 7z<BR>\n" );
document.write( "12z + 7z + z = 120<BR>\n" );
document.write( "20z = 120<BR>\n" );
document.write( "z = 120/20<BR>\n" );
document.write( "z = 6 yrs is grandson's age<BR>\n" );
document.write( "the<BR>\n" );
document.write( "12(6) = 72 yrs is grandfathers age<BR>\n" );
document.write( "and<BR>\n" );
document.write( "7(6) = 42 yrs is son's age\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
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document.write( " How old is the grandfather?  72 </SPAN>\n" );
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