document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1028720>Question 1028720</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man is three times as old as his son.Fours years ago he was four times as his son was at that time. How old is the son? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #643909 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=643909\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A man is three times as old as his son.<BR>\n" );
document.write( "m = 3s<BR>\n" );
document.write( "Fours years ago he was four times as his son was at that time.<BR>\n" );
document.write( "m - 4 = 4(s - 4)<BR>\n" );
document.write( "m - 4 = 4s - 16<BR>\n" );
document.write( "m = 4s - 16 + 4<BR>\n" );
document.write( "m = 4s - 12<BR>\n" );
document.write( " How old is the son?<BR>\n" );
document.write( "In the above replace m = 3s<BR>\n" );
document.write( "3s = 4s - 12<BR>\n" );
document.write( "3s - 4s = -12<BR>\n" );
document.write( "-s = -12<BR>\n" );
document.write( "s = 12 yrs is the son<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "See if that checks out in the statement: m = 3(12)<BR>\n" );
document.write( "\"Fours years ago he was four times as his son was at that time.\"<BR>\n" );
document.write( "36 - 4 = 4(12 - 4)<BR>\n" );
document.write( "32 = 4(8)<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );