document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137112>Question 1137112</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, I need help setting up the equation.  The problem is: <BR>\n" );
document.write( "In 16 years Dana will be five times older than she was four years ago.  In how many years will Dana celebrate her 16th birthday?\r<BR>\n" );
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document.write( "D=Dana<BR>\n" );
document.write( "(D x 5) - 4 = 16  <BR>\n" );
document.write( "does not seem correct. Thanks for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #754938 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=754938\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x equal her age today.\r<BR>\n" );
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document.write( "in 16 years, she will be 5 times older than she was 4 years ago.\r<BR>\n" );
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document.write( "the equation for that would be x + 16 = 5 * (x - 4) + (x - 4).\r<BR>\n" );
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document.write( "simplify that equation to get x + 16 = 6 * (x - 4).\r<BR>\n" );
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document.write( "that means she will be 6 times as old as she was 4 years ago.\r<BR>\n" );
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document.write( "simplify that equation to get x + 16 = 6 * x - 24.\r<BR>\n" );
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document.write( "add 24 to both sides of this equation and subtract x from both sides of this equation to get 40 = 5 * x.\r<BR>\n" );
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document.write( "solve for x to get x = 40 / 5 = 8.\r<BR>\n" );
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document.write( "she is 8 years old today.\r<BR>\n" );
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document.write( "4 years ago she was 4 years old.\r<BR>\n" );
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document.write( "16 years from now, she will be 24 years old.\r<BR>\n" );
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document.write( "24 years old / 4 = 6.\r<BR>\n" );
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document.write( "that means that she will be 6 times 4 years old in 16 years.\r<BR>\n" );
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document.write( "if she will be 6 times 4 years old in 16 years, subtract 4 from that and you will get she is 20 years older than 4 years old which means she is 5 times older than she was 4 years ago.\r<BR>\n" );
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document.write( "24 / 4 = 6 times as old.\r<BR>\n" );
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document.write( "(24 - 4) / 4 = 20 / 4 = 5 times older.\r<BR>\n" );
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document.write( "if this is not the answer you are looking for, then send me an email and i'll revise the answer from her being 5 times older to her being 5 times as old.\r<BR>\n" );
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document.write( "there is a difference between the two statements and it's a very important difference.\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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