document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=763947>Question 763947</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Doug is 19 years older than his sister Barbara. In 3 years, he will be twice as old as Barbara. 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 #465120 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=465120\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Doug is 19 years older than his sister Barbara. In 3 years, he will be twice as old as Barbara. How old is each of them now?<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "d = b + 19<BR>\n" );
document.write( "d+3 = 2(b+3)<BR>\n" );
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document.write( "Substitute for \"d\" and solve for \"b\":<BR>\n" );
document.write( "b+19+3 = 2b+6<BR>\n" );
document.write( "b = 16 years (Barbara's age)<BR>\n" );
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document.write( "d = b + 19<BR>\n" );
document.write( "d = 35 years (Doug's age)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=================<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );