document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=949522>Question 949522</A>: <I><SPAN STYLE=\"word-break: break-all;\"> John is presently 12 years older than Fred. Four years ago John was twice as old as Fred. How old is each now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #579708 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=579708\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> J=John's age=F+12 years: F=Fred's age<BR>\n" );
document.write( "J-4 years=2(F-4 years) Substitute for J<BR>\n" );
document.write( "F+12 years-4 years=2(F-4 years)<BR>\n" );
document.write( "F+8=2F-8 years Add 8 years to each side.<BR>\n" );
document.write( "F+16 years=2F Subtract F from each side.<BR>\n" );
document.write( "16 years=F ANSWER: Fred is currently 16 years old.<BR>\n" );
document.write( "J=F+12 years=16 years+12 years=28 years ANSWER: John is currently 28 years old.<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "J-4 years=2(F-4 years)<BR>\n" );
document.write( "28 years-4 years=2(16 years-4 years)<BR>\n" );
document.write( "24 years=2(12 years)<BR>\n" );
document.write( "24 years=24 years </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );