document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=174433>Question 174433</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father is now four times as old as his son.If the sum of their ages ten years ago was sixty.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 #129429 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=129429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     A father is now four times as old as his son.If the sum of their ages ten years ago was sixty.find their present ages ?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = son's age<BR>\n" );
document.write( "then<BR>\n" );
document.write( "4x = father's age<BR>\n" );
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document.write( "From:\"the sum of their ages ten years ago was sixty\" we get:<BR>\n" );
document.write( "(x-10) + (4x-10) = 60<BR>\n" );
document.write( "x - 10 + 4x - 10 = 60<BR>\n" );
document.write( "5x - 20 = 60<BR>\n" );
document.write( "5x = 80<BR>\n" );
document.write( "x = 16 years (son's age)<BR>\n" );
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document.write( "father's age:<BR>\n" );
document.write( "4x = 4(16) = 64 years (father's age) </SPAN>\n" );
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