document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1>Question 1</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father's age is thirteen times that of his son. In 10 years, the son's age will be one-third of his father's. How old are the father and son? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209645 by </B><A HREF=/tutors/aboutme.mpl?userid=RoRo3940><B>RoRo3940(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RoRo3940><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=209645\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> father's age = 13 * son's age<BR>\n" );
document.write( "son's age + 10 = (father's age + 10 )/3 <BR>\n" );
document.write( "Because we know that father's age is 13* son's age, we have <BR>\n" );
document.write( "son's age + 10 = (13*son's age + 10)/3 <BR>\n" );
document.write( "or <BR>\n" );
document.write( "3*(son's age + 10) = (13*son's age + 10) <BR>\n" );
document.write( "or <BR>\n" );
document.write( "3*son's age + 30 = 13*son's age + 10<BR>\n" );
document.write( "20 = 10 * son's age <BR>\n" );
document.write( "ANSWER: <BR>\n" );
document.write( "son's age = 2<BR>\n" );
document.write( "father's age = 13*2 = 26.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );