document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1012931>Question 1012931</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A class of 30 students took two quizzes. 16 passed the first quiz and 20 passed the second. if four students failed both quizzes, how many passed both? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #629062 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=629062\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 16 passed the first and four failed both. That is <BR>\n" );
document.write( "20 out of 30, leaving 10 who failed the first and <BR>\n" );
document.write( "passed the second.  Of 20 who passed the second, <BR>\n" );
document.write( "10 had failed the first, leaving 10 who passed both.<BR>\n" );
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document.write( "So 4 failed both, 10 failed the first and passed the <BR>\n" );
document.write( "second, 6 passed the first and failed the second, and<BR>\n" );
document.write( "10 passed both. Total: 30<BR>\n" );
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document.write( "Four failed both, ten passed both, and 16 passed one <BR>\n" );
document.write( "of two. Total: 30.<BR>\n" );
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document.write( "ANSWER: Ten students passed both tests.<BR>\n" );
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