document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1195211>Question 1195211</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of the ages of Jordan and Christy is 70 years. 8 years ago, Jordan's age was 2 times Christy's age. How old is Jordan now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #827639 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=827639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "There are dozens of ways to set up and solve a problem like this.  The response from the other tutor showed one of them.<br><BR>\n" );
document.write( "I personally would solve the whole thing using logical reasoning and simple arithmetic; but you are probably looking for a formal algebraic solution.<br><BR>\n" );
document.write( "For and algebraic solution, I would still work part of the problem using logical reasoning to make the algebra required to solve the problem easier, before actually setting the problem up using formal algebra.<br><BR>\n" );
document.write( "Since the sum of their ages now is 70, the sum of their ages 8 years ago was 70-2(8) = 70-16 = 54. At that time, Jordan's age was twice Christy's age.  So<br><BR>\n" );
document.write( "let x = Christy's age 8 years ago<BR>\n" );
document.write( "then 2x = Jordan's age 8 years ago<br><BR>\n" );
document.write( "The sum of their ages 8 years ago was 54:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B2x=54 ALIGN=MIDDLE  ALT=\"x%2B2x=54\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x=54 ALIGN=MIDDLE  ALT=\"3x=54\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=18 ALIGN=MIDDLE  ALT=\"x=18\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "8 years ago, Christy's age was x=18 and Jordan's age was 2x=36.  So now their ages are 18+8=26 and 36+8=44.<br><BR>\n" );
document.write( "ANSWER: Jordan is now 44 years old.<br><BR>\n" );
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