document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1060722>Question 1060722</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If n(A&#8746;B)=60 , n(A&#8745;B)=20, and n(A)=n(B), find n(A)<BR>\n" );
document.write( "A. 10<BR>\n" );
document.write( "B. 30<BR>\n" );
document.write( "C. 40<BR>\n" );
document.write( "D. 20 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #675592 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52799)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=675592\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "It is clear and widely well known that n(A U B) = n(A) + n(B) - n(A n B).\r<BR>\n" );
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document.write( "For the given case, it implies that 60 = 2*n(A) - 20, or\r<BR>\n" );
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document.write( "n(A) = 40.\r<BR>\n" );
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document.write( "Solved.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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