document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147638>Question 147638</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A computer store has 10 copies of a word processing program, 12 copies of a spread sheet program, and 8 copies of a draw program.  Three of the word processing, four of the spread sheet and two of the draw programs are infected with a computer virus.  If a program is selected at random, the probability it is infected with a virus is: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108015 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=108015\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you choose at random you can choose from 10+12+8=30 programs of which 3+4+2=9 are infected.<BR>\n" );
document.write( "9/30=3/10 probability you choose an infected one.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );