document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1037712>Question 1037712</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man is 3 times as old as his son. 5 years ago, he was 4 times as old as 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 #652330 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=652330\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man is 3 times as old as his son. 5 years ago, he was 4 times as old as his son. Find their present ages. <BR>\n" );
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document.write( "f = 3s<BR>\n" );
document.write( "f-5 = 4(s-5)<BR>\n" );
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document.write( "Substitute for \"f\" and solve for \"s\"::<BR>\n" );
document.write( "3s-5 = 4s-20<BR>\n" );
document.write( "s = 15 yrs (son's age)<BR>\n" );
document.write( "f = 3s = 45 yrs (father's age)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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