document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=916859>Question 916859</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Beth is 4 years older than Jane. Sally is twice as old as Jane. Bill is twice as old as Sally. If the sum of their ages is 84 how old is each person? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #556327 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=556327\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let<BR>\n" );
document.write( "B = Beth's age<BR>\n" );
document.write( "J = Jane's age<BR>\n" );
document.write( "S = Sally's age<BR>\n" );
document.write( "W = Bill's age<BR>\n" );
document.write( "The problem statement gives us the four equations:<BR>\n" );
document.write( "(1) B = J + 4<BR>\n" );
document.write( "(2) S = 2*J<BR>\n" );
document.write( "(3) W = 2*S = 4*J<BR>\n" );
document.write( "(4) B+J+S+W = 84 or<BR>\n" );
document.write( "(5) J +4 +J + 2*J + 4*J = 84 or<BR>\n" );
document.write( "(6) 8*J = 80 or<BR>\n" );
document.write( "(7) J = 10<BR>\n" );
document.write( "Then<BR>\n" );
document.write( "(8) B = 14 and<BR>\n" );
document.write( "(9) S = 20 and<BR>\n" );
document.write( "(10) W = 40<BR>\n" );
document.write( "Check this with (5)<BR>\n" );
document.write( "Is (14+10+20+40=84)?<BR>\n" );
document.write( "Is (84=84)? Yes<BR>\n" );
document.write( "Answer: Beth is 14, Jane is 10, Sally is 20 and Bill is 40. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );