document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1113116>Question 1113116</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Travis is 21 years older than his sister Michelle. In 9 years, he will be twice as old as Michelle. 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 #728155 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=728155\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Travis is 21 years older than his sister Michelle. In 9 years, he will be twice as old as Michelle. How old is each of them now? <BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "T = M + 21<BR>\n" );
document.write( "T+9 = 2(M+9)<BR>\n" );
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document.write( "Substitute for \"T\" and solve for \"M\":<BR>\n" );
document.write( "M+21+9 = 2M + 18<BR>\n" );
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document.write( "M + 30 = 2M+18<BR>\n" );
document.write( "M = 12 (Michelle's age now)<BR>\n" );
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document.write( "T = M + 21 = 33 (Travis's age now)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );