document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=380289>Question 380289</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mrs. Ballo's second grade class of 30 conducted a survey of pet ownership and found: 8 students owned a cat, 15 owned a dog and 5 owned both. How many of the students owned no dogs?\r<BR>\n" );
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document.write( "The answer I found of 8 was incorrect and not sure how to go about this. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269953 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269953\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are 15 who own dogs, so 30-15 or 15 do not own a dog.\r<BR>\n" );
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document.write( "Or, since there are 5 that own both, then 3 students own a cat (only), 10 own a dog (only) and 5 own both. It follows that 12 students have no pets (or own pets other than cats or dogs). Thus the number of people who don't have a dog is 3+12=15. </SPAN>\n" );
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