document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=471060>Question 471060</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If P(A or B) = 0.5, P(A) = 0.3 and P(B)= 0.2, determine<BR>\n" );
document.write( "P(A and B). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #323115 by </B><A HREF=/tutors/aboutme.mpl?userid=ccs2011><B>ccs2011(207)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ccs2011><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=ccs2011><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=323115\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(A or B) = P(A) + P(B) - P(A and B)<BR>\n" );
document.write( "0.5 = 0.3 + 0.2 - P(A and B)<BR>\n" );
document.write( "0.5 = 0.5 - P(A and B)<BR>\n" );
document.write( "0 = -P(A and B)<BR>\n" );
document.write( "0 = P(A and B) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );