document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=353141>Question 353141</A>: <I><SPAN STYLE=\"word-break: break-all;\"> From a group of 100 students, 30 are taking math, 20 are taking chemistry, and of those totals 10 are taking both. What is the probability that a randomly selected student is taking math or chemistry?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #252363 by </B><A HREF=/tutors/aboutme.mpl?userid=CharlesG2><B>CharlesG2(834)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CharlesG2><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=252363\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> From a group of 100 students, 30 are taking math, 20 are taking chemistry, and of those totals 10 are taking both. What is the probability that a randomly selected student is taking math or chemistry?\r<BR>\n" );
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document.write( "let set A = all students = 100 students<BR>\n" );
document.write( "let set M = math students = 30 students<BR>\n" );
document.write( "let set C = chemistry students = 20 students<BR>\n" );
document.write( "probability of just math = 30/100 = 30%<BR>\n" );
document.write( "probability of just chemistry = 20/100 = 20%<BR>\n" );
document.write( "probability of both math and chemistry = 10/100 = 10%<BR>\n" );
document.write( "probability of math or chemistry but not both = (30 - 10)/100 + (20 - 10)/100<BR>\n" );
document.write( "probability of math or chemistry but not both = 20/100 + 10/100 = 30/100 = 30%<BR>\n" );
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