document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890724>Question 890724</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of ages of a father and his son is 72 years. After 2 years .father will be 4 years less than 3 times the age of his son .find their present ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #539261 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=539261\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write an equation for each statement<BR>\n" );
document.write( "f = father's present age<BR>\n" );
document.write( "s = son's<BR>\n" );
document.write( ":<BR>\n" );
document.write( "\"The sum of ages of a father and his son is 72 years.\"<BR>\n" );
document.write( "f + s = 72<BR>\n" );
document.write( ":<BR>\n" );
document.write( "\" After 2 years .father will be 4 years less than 3 times the age of his son\"<BR>\n" );
document.write( "f + 2 = 3(s+2)  - 4<BR>\n" );
document.write( "f + 2 = 3s + 6 - 4 <BR>\n" );
document.write( "f + 2 = 3s + 2<BR>\n" );
document.write( "f = 3s + 2 - 2<BR>\n" );
document.write( "f = 3s<BR>\n" );
document.write( ":<BR>\n" );
document.write( ".find their present ages.<BR>\n" );
document.write( "In the 1st equation replace f with 3s<BR>\n" );
document.write( "3s + s = 72<BR>\n" );
document.write( "s = 72/4<BR>\n" );
document.write( "s = 18 is the son's age<BR>\n" );
document.write( ":<BR>\n" );
document.write( "I'll let you find the father's age </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );