document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=566715>Question 566715</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Benilda is one year older than twice her sister's age. The difference of their ages is 18. How old is Benilda? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #366318 by </B><A HREF=/tutors/aboutme.mpl?userid=TutorDelphia><B>TutorDelphia(193)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TutorDelphia><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=TutorDelphia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=366318\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Benilda is one year older than twice her sister's age<BR>\n" );
document.write( "Benilda's age will be b and her sister's age will be s.<BR>\n" );
document.write( "When we see the word \"is\", we know to put an equal sign<BR>\n" );
document.write( "b=2s+1<BR>\n" );
document.write( "The difference of their ages is 18. <BR>\n" );
document.write( "b-s=18<BR>\n" );
document.write( "We are going to use subsitution because the first equation is already solved for b.<BR>\n" );
document.write( "(2s+1)-s=18<BR>\n" );
document.write( "combined like terms<BR>\n" );
document.write( "s+1=18<BR>\n" );
document.write( "subtracted 1 from both sides<BR>\n" );
document.write( "s=17<BR>\n" );
document.write( "and then we can plug in 17 in for s<BR>\n" );
document.write( "b=2*17+1<BR>\n" );
document.write( "b=35 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );