document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=984683>Question 984683</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Today, Alan's son is exactly one fifth of Alan's age.<BR>\n" );
document.write( "In 21 years, Alan will be exactly twice his son’s age.\r<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 #605473 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=605473\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A=Alan's age; S=son's age<BR>\n" );
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document.write( "A=5S<BR>\n" );
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document.write( "A+21=2(S+21) Substitute for A<BR>\n" );
document.write( "5S+21=2S+42<BR>\n" );
document.write( "3S=21<BR>\n" );
document.write( "S=7 <BR>\n" );
document.write( "A=5S=5(7)=35<BR>\n" );
document.write( "Alan is 35 years old and his son is 7 years old. </SPAN>\n" );
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