document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178769>Question 1178769</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the year 2021, Dylan is four years older than his sister Anna, Anna is four times as old as their dog Zona, and the ages of Anna and Zona sum to one less than Dylan’s age. If all three celebrate their birthdays today, compute the year that Zona was born. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #808166 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=808166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "In the year 2021, Dylan is four years older than his sister Anna,\r<BR>\n" );
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document.write( "d=a+4<BR>\n" );
document.write( " Anna is four times as old as their dog Zona,\r<BR>\n" );
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document.write( "a=4z\r<BR>\n" );
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document.write( "and the ages of Anna and Zona sum to one less than Dylan’s age.<BR>\n" );
document.write( "a+z=d-1\r<BR>\n" );
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document.write( "z=3 <BR>\n" );
document.write( "Zona was born in 2018\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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