document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=785457>Question 785457</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man is four times as old as his son. Three years ago, he was 5 times s old as his son  was at that time. HOW OLD IS THE SON?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #477545 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=477545\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man is four times as old as his son. Three years ago, he was 5 times s old as his son was at that time. HOW OLD IS THE SON?<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "f = 2s<BR>\n" );
document.write( "f-3 = 5(s-3)<BR>\n" );
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document.write( "Substitute for \"f\" and solve for \"s\":<BR>\n" );
document.write( "2s-3 = 5s-15<BR>\n" );
document.write( "3s = 12<BR>\n" );
document.write( "s = 4 yrs (the son's age now)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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