document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890758>Question 890758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At present time a man is four times as old as his son. Six years ago he was as 10 times as old. Find their present age. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #539236 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=539236\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At present time a man is four times as old as his son. Six years ago he was as 10 times as old. Find their present age.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "m = 4s<BR>\n" );
document.write( "m-6 = 10(s-6)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Substitute for \"m\" and solve for \"s\":<BR>\n" );
document.write( "4s-6 = 10s-60<BR>\n" );
document.write( "6s = 54<BR>\n" );
document.write( "s = 9 yrs (son's age now)<BR>\n" );
document.write( "m = 4s = 36 (father's age now)<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );