document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1030858>Question 1030858</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Michelle is 21 years older than her brother Frank.  Nine years from now, Michelle will be twice as old as Frank.  How old is each at the present time? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #645625 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=645625\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Call their ages NOW, m and f.  Then we write<BR>\n" );
document.write( "m = f + 21<BR>\n" );
document.write( "Nine years from now,<BR>\n" );
document.write( "m + 9 = 2(f + 9)<BR>\n" );
document.write( "Substitute the first one into the second and get<BR>\n" );
document.write( "f+21 + 9 = 2(f + 9)<BR>\n" );
document.write( "f + 30 = 2f + 18<BR>\n" );
document.write( "Now subtract 18 and subtract f and get<BR>\n" );
document.write( "f + 12 = 2f<BR>\n" );
document.write( "f = 12<BR>\n" );
document.write( "Thus Michelle is 33. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );