document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=260697>Question 260697</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mary is twice as old as Susan and three years older than John. The sum of their<BR>\n" );
document.write( "ages is 32. How old is Susan? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #192033 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=192033\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> m = mary<BR>\n" );
document.write( "s = susan<BR>\n" );
document.write( "J = john<BR>\n" );
document.write( "------<BR>\n" );
document.write( "(i) m = 2s<BR>\n" );
document.write( "(ii) m = j + 3<BR>\n" );
document.write( "(iii) m+s+j = 32<BR>\n" );
document.write( "step 1 - set (i) = (ii) and solve for j. We get<BR>\n" );
document.write( "(iv) 2s = j + 3<BR>\n" );
document.write( "(v) j = 2s-3<BR>\n" );
document.write( "step - 2 rewrite m and j in terms of s using (i) and (v). We get<BR>\n" );
document.write( "(vi) 2s + s + 2s -3 = 32<BR>\n" );
document.write( "step 3 - solve for s. WE get<BR>\n" );
document.write( "(vii) 5s - 3 = 32<BR>\n" );
document.write( "add 3 to get<BR>\n" );
document.write( "(viii) 5s = 35<BR>\n" );
document.write( "divide by 5 to get<BR>\n" );
document.write( "(ix) s = 7<BR>\n" );
document.write( "So, susan is 7. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );