document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=429574>Question 429574</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Darren is three years older than his sister.In three years, he will be twice as old as she will be then.How old is each now?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #298347 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=298347\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Darren is three years older than his sister.In three years, he will be twice as old as she will be then.How old is each now? \r<BR>\n" );
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document.write( "Let Darren be \"d\" now.<BR>\n" );
document.write( "Let Sister be \"s\" now.<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "d = s + 3<BR>\n" );
document.write( "(d+3) = 2(s+3)<BR>\n" );
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document.write( "Substitute for \"d\" and solve for \"s\":<BR>\n" );
document.write( "(s+3+3) = 2(s+3)<BR>\n" );
document.write( "s+6 = 2s+6<BR>\n" );
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document.write( "s = 0 (sister's age now)<BR>\n" );
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document.write( "d = s+3<BR>\n" );
document.write( "d = 3 yrs old (Darren's age now)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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