document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=721763>Question 721763</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack is Jill's brother. Jack has as many brothers as sisters. Jill has twice as many brothers and sisters. How many children are in the family? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442491 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=442491\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let n = the number of brothers and sisters Jack has<BR>\n" );
document.write( "Then Jill has n+1 brothers and n-1 sisters<BR>\n" );
document.write( "Jill has twice as many brothers as sisters:<BR>\n" );
document.write( "n+1 = 2(n-1)<BR>\n" );
document.write( "n+1 = 2n-2<BR>\n" );
document.write( "n = 3<BR>\n" );
document.write( "So Jack has 3 brothers and 3 sisters<BR>\n" );
document.write( "Jill has 4 brothers and 2 sisters<BR>\n" );
document.write( "Therefore the total number of children is 7. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );