document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=977729>Question 977729</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father is twice as old as his son. He was 6 times his son’s age 20 years ago. What<BR>\n" );
document.write( "is the father’s 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 #599278 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=599278\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> hi there,<BR>\n" );
document.write( "A father is twice as old as his son<BR>\n" );
document.write( "F = 2S<BR>\n" );
document.write( "He was 6 times his son’s age 20 years ago<BR>\n" );
document.write( "F - 20 = 6(S - 20)<BR>\n" );
document.write( "Replace F with 2S from first equation<BR>\n" );
document.write( "2s - 20 = 6s - 120<BR>\n" );
document.write( "Collect like terms<BR>\n" );
document.write( "2s - 6s = -120 + 20<BR>\n" );
document.write( "-4s = -100<BR>\n" );
document.write( " s = 25<BR>\n" );
document.write( "Father's present age is 50 yrs old<BR>\n" );
document.write( "hope this helps:-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );