document.write( "Question 1194868: Box A contains 5 red balls and 4 white balls. Box B contains 6 red balls and 5 white balls. If one ball is selected at random without looking at the boxes and is found red, what is the probability it came from box A? \n" ); document.write( "
Algebra.Com's Answer #827162 by Boreal(15235)\"\" \"About 
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There are 20 balls altogether, and 11 are red.
\n" ); document.write( "If a red ball is found it has a 5/11 chance coming from box A
\n" ); document.write( "======R========W======Total
\n" ); document.write( "A------5-----------4----------9
\n" ); document.write( "B------6-----------5---------11
\n" ); document.write( "Total--11-----------9---------20
\n" ); document.write( "If we select a red ball, it has a 5/11 chance of being from box A.
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