document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=175417>Question 175417</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 thrie 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 #130471 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=130471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = son's age<BR>\n" );
document.write( "4x = father's age\r<BR>\n" );
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document.write( "x-10 = son's age 10 years ago<BR>\n" );
document.write( "4x-10= father's age 10 years ago\r<BR>\n" );
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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  son's age now<BR>\n" );
document.write( "4x=64 father's age now (or was that his grandfather??)\r<BR>\n" );
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document.write( "Check:  10 years ago, son was 6 and father was 54, and the sumof their ages is 60.  \r<BR>\n" );
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document.write( "R^2<BR>\n" );
document.write( " </SPAN>\n" );
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