document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=370931>Question 370931</A>: <I><SPAN STYLE=\"word-break: break-all;\"> jack is 4 years older than twice his sister's age.in 4 years time he will be 11 years older than her. how old is joseph now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264296 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=264296\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> jack is 4 years older than twice his sister's age.<BR>\n" );
document.write( "in 4 years time he will be 11 years older than her. <BR>\n" );
document.write( "how old is joseph now?<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "j = 2s+4<BR>\n" );
document.write( "(j+4) = (s+4)+11<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Substitute for \"j\" and solve for \"s\":<BR>\n" );
document.write( "(2s+4+4) = s+15<BR>\n" );
document.write( "2s + 8 = s+15<BR>\n" );
document.write( "s = 7 yrs (Sister's age now)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Since j = 2s+4, j = 16+4 = 20 yrs (Jack's age now)<BR>\n" );
document.write( "========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );