document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121274>Question 1121274</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr Davis is three times as old as his only son, Peter.  five years ago, Mr Davis was four times as old his son Peter.\r<BR>\n" );
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document.write( "1.Write down two equations regarding thier age?<BR>\n" );
document.write( "2.and how old were Mr Davis and Peter ten years ago?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #737089 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=737089\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Davis=D<BR>\n" );
document.write( "Peter=P<BR>\n" );
document.write( "Now, D=3P<BR>\n" );
document.write( "5 years ago D-5<BR>\n" );
document.write( "D-5=4(P-5)<BR>\n" );
document.write( "D-5=4P-20<BR>\n" );
document.write( "D=4P-15<BR>\n" );
document.write( "substitute<BR>\n" );
document.write( "3P=4P=15<BR>\n" );
document.write( "P=15 years old<BR>\n" );
document.write( "D=45 years old<BR>\n" );
document.write( "5 years ago it was P 10 and D 40.<BR>\n" );
document.write( "10 years ago it was P 5 and D 35 </SPAN>\n" );
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