document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=976565>Question 976565</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Bob's father is 3 times old as Bob. 4 years ago, he was 4 times older. How old is Bob?	<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #598134 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=598134\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Bob's father is 3 times old as Bob. 4 years ago, he was 4 times older. How old is Bob?	<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x=bob's age<BR>\n" );
document.write( "3x= father's age<BR>\n" );
document.write( "..<BR>\n" );
document.write( "4 yrs ago:<BR>\n" );
document.write( "x-4=bob's age<BR>\n" );
document.write( "3x-4= father's age<BR>\n" );
document.write( "3x-4=4(x-4) (4 years ago,father was 4 times older)<BR>\n" );
document.write( "3x-4=4x-16<BR>\n" );
document.write( "x=12<BR>\n" );
document.write( "How old is Bob? 12 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );