document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971208>Question 971208</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 50 students in a class<BR>\n" );
document.write( "18 studying biology<BR>\n" );
document.write( "30 chemistry<BR>\n" );
document.write( "25 physics<BR>\n" );
document.write( "11 studing physics and chemistry<BR>\n" );
document.write( "9 biology and chemistry<BR>\n" );
document.write( "7 biology and physics.\r<BR>\n" );
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document.write( "How many students are studying all three subs ?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #593765 by </B><A HREF=/tutors/aboutme.mpl?userid=khai><B>khai(18)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=khai><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=khai><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=593765\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I suggest to draw the Venn diagram first because it will make you more make sense. <BR>\n" );
document.write( "ok.. so,<BR>\n" );
document.write( "18 studying biology; 9 biology and chemistry; 7biology and physic.<BR>\n" );
document.write( "18 - (9+7) = 2 (2 is the student who only study bio)\r<BR>\n" );
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document.write( "30 chemistry; 9 biology and chemistry; 11 studying physics and chemistry<BR>\n" );
document.write( "30 - (11+9) = 10 (only chemistry)\r<BR>\n" );
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document.write( "25 physics; 7 biology and physics; 11 studying physics and chemistry<BR>\n" );
document.write( "25 - (7+11) = 7 (only physic)\r<BR>\n" );
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document.write( "add all numbers and subtract from 50 because it said 50 students in a class<BR>\n" );
document.write( "50 - (2+10+7+9+7+11) = 4<BR>\n" );
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document.write( "the answer is 4 students are studying all three subs......  </SPAN>\n" );
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