document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=152801>Question 152801</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a man is 65 years old and his grandson is 20. how many years ago was the grandfather six times as old as the grandson? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #112311 by </B><A HREF=/tutors/aboutme.mpl?userid=orca><B>orca(409)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=orca><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=112311\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that x years ago the grandfather was six times as old as the grandson.<BR>\n" );
document.write( "x years ago, their ages were as follows:<BR>\n" );
document.write( "Grandfather: 65 - x,<BR>\n" );
document.write( "Grandson: 20 - x.<BR>\n" );
document.write( "As then the grandfather was six times as old as the grandson, we can set up an equation:<BR>\n" );
document.write( "65 - x = 6(20 - x)<BR>\n" );
document.write( "Solving for x, we obtain:<BR>\n" );
document.write( "65 - x = 120 - 6x<BR>\n" );
document.write( "5x = 55<BR>\n" );
document.write( "x = 11<BR>\n" );
document.write( "So 11 years ago the grandfather was six times as old as the grandson.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );