document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1102468>Question 1102468</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It is Khadijah’s birthday today. One year from now she will be twice as old as she was 10 years ago. Calculate the present age of Khadijah.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #717164 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=717164\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x = the age of khadijah today.<BR>\n" );
document.write( "1 year from now, khadijah will be x + 1 years old.<BR>\n" );
document.write( "1 year from now, she will be twice as old as she was 10 years ago.<BR>\n" );
document.write( "10 years ago, she was x - 10 years old.<BR>\n" );
document.write( "your equation is x+1 = 2 * (x-10)<BR>\n" );
document.write( "simplify to get x+1 = 2x - 20<BR>\n" );
document.write( "add 20 both sides and subtract x from both sides of this equation to get:<BR>\n" );
document.write( "21 = x<BR>\n" );
document.write( "that's the age of khadijah today.<BR>\n" );
document.write( "1 year from now she will be 22.<BR>\n" );
document.write( "10 years ago she was 11.<BR>\n" );
document.write( "22 is equal to 2 * 11.<BR>\n" );
document.write( "this confirms that 1 year from now she will be twice as old as she was 10 years ago.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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