document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=351523>Question 351523</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Monica is one year older than twice  her sister's age. The difference of their ages is 18. Find theor present ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #251150 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=251150\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> monica x years<BR>\n" );
document.write( "sister y years<BR>\n" );
document.write( "...<BR>\n" );
document.write( "x=2y+1 <BR>\n" );
document.write( "x-2y=1................1<BR>\n" );
document.write( "x-y = 18..............2<BR>\n" );
document.write( "multiply equation by -1 and add it up to equation 2<BR>\n" );
document.write( "-x+2y=-1<BR>\n" );
document.write( "x-y = 18<BR>\n" );
document.write( "y=17  sister's age<BR>\n" );
document.write( "...<BR>\n" );
document.write( "x-y 1=8<BR>\n" );
document.write( "x=18+y<BR>\n" );
document.write( "x=18+17 = 35 monica'a age<BR>\n" );
document.write( "......<BR>\n" );
document.write( "OR\r<BR>\n" );
document.write( "\n" );
document.write( "if sister is x years<BR>\n" );
document.write( "monica = 2x+1<BR>\n" );
document.write( "...<BR>\n" );
document.write( "2x+1-x=18<BR>\n" );
document.write( "x= 18-1<BR>\n" );
document.write( "x= 17 years  sister's age\r<BR>\n" );
document.write( "\n" );
document.write( "2x+1= 2*17+1= 35 monica's age </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );