document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=608729>Question 608729</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You are presented with three urns. Each urn has 10 marbles. In addition, each urn holds only black or red marbles. Urn 1 has 3 red marbles. Urn 2 has 8 red marbles. Urn 3 has 5 red marbles. You randomly pick 1 marble from 1 of the three urns. Calculate the probability that it is a black marble. Round answer to the nearest hundredth.\r<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 #383378 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=383378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are presented with three urns. Each urn has 10 marbles. In addition, each urn holds only black or red marbles. Urn 1 has 3 red marbles. Urn 2 has 8 red marbles. Urn 3 has 5 red marbles. You randomly pick 1 marble from 1 of the three urns. Calculate the probability that it is a black marble. Round answer to the nearest hundredth.<BR>\n" );
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document.write( "total # of marbles: 30<BR>\n" );
document.write( "total # of black marbles: 7 + 2 + 5 = 14 <BR>\n" );
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document.write( "P(slect a black) = 14/30 = 7/15<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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