document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=104544>Question 104544</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Doug is 12 years older than his sister Linda. in 4 years ,he will be twice as old as linda. how old is each of them now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #76068 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=76068\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let d=Doug's age, n=Linda's age<BR>\n" );
document.write( "d=n+12...d-n=12 (A)<BR>\n" );
document.write( "d+4=2(n+4)...d+4=2n+8...d-2n=4 (B)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "d-n+12<BR>\n" );
document.write( "-d+2n=-4 multiply (B) yimes -1<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "n=8 add (A) and (B)<BR>\n" );
document.write( "Linda is 8 and Doug is 20<BR>\n" );
document.write( "in 4 yrs Linda will be 12 and Doug 24.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );