document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=21189>Question 21189</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jim is k years old. Joe is k2 (k squared) years old. In 8 years Joe will be twice as old as Jim is then. How old is Joe now? NEeds to be done as a \"Zero Product Property\" \r<BR>\n" );
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document.write( "0 = k+8(2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #10389 by </B><A HREF=/tutors/aboutme.mpl?userid=kapilsinghi><B>kapilsinghi(68)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=kapilsinghi><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=10389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jim is k years old. Joe is k2 (k squared) years old. In 8 years Joe will be twice as old as Jim is then. How old is Joe now? NEeds to be done as a \"Zero Product Property\" \r<BR>\n" );
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document.write( "Jim Age after 8 years = k+8<BR>\n" );
document.write( "Joe age after 8 years = k^2 +8\r<BR>\n" );
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document.write( "according to the condition \"In 8 years Joe will be twice as old as Jim is then\"<BR>\n" );
document.write( "(k+8)*2= k^2 + 8<BR>\n" );
document.write( "2k+16= k^2 + 8<BR>\n" );
document.write( "0= k^2 -2k + 8 -16<BR>\n" );
document.write( "0= k^2 -2k -8<BR>\n" );
document.write( "0= k^2 -4k +2k -8<BR>\n" );
document.write( "0= k(k-4)+2(k-4)<BR>\n" );
document.write( "0= (k+2)(k-4)<BR>\n" );
document.write( "k=-2 rejected<BR>\n" );
document.write( "k=4<BR>\n" );
document.write( "age of joe = k^2 = 4^2 = 16 </SPAN>\n" );
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