document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824053>Question 824053</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Faridah is 3 times as old as her sister. Two years ago, the difference of squares of their ages was 240. What are their present age? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496036 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=496036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f=3s,<BR>\n" );
document.write( "(f-2)^2-(s-2)^2=240\r<BR>\n" );
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document.write( "f^2-4f-s^2+4s = 240<BR>\n" );
document.write( "f = 18,   s = 6<BR>\n" );
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