document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=359900>Question 359900</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Don is 21 years older than Betty. In 6 years Don will be twice as old as Betty. How old are they now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #256794 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=256794\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D = B+21.<BR>\n" );
document.write( "D+6 = 2(B+6).<BR>\n" );
document.write( "By direct substitution, B+21+6= 2(B+6).<BR>\n" );
document.write( "B+27 = 2B+12.<BR>\n" );
document.write( "B = 15.<BR>\n" );
document.write( "D = 36. </SPAN>\n" );
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