document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=759937>Question 759937</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of the ages of a father and son is 85 years. five years ago, the father was exactly four times as old as his son. the present age of the father is? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #462353 by </B><A HREF=/tutors/aboutme.mpl?userid=sachi><B>sachi(548)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sachi><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=sachi><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=462353\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the sum of the ages of a father and son is 85 years.<BR>\n" );
document.write( "let the age of father is x <BR>\n" );
document.write( "so the son's age=85-x<BR>\n" );
document.write( "five years ago, <BR>\n" );
document.write( "the age of father was=x-5 <BR>\n" );
document.write( "the son's age=85-x-5=80-x<BR>\n" );
document.write( "APQ the father was exactly four times as old as his son. <BR>\n" );
document.write( "x-5 =4(80-x)=320-4x<BR>\n" );
document.write( "or 5x=325<BR>\n" );
document.write( "or x=the present age of the father=325/5=65 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );