document.write( "Question 911536: An urn contains 40 balls. Some are red balls and the rest are white balls.\r
\n" ); document.write( "\n" ); document.write( "If the probability of extracting a white ball is 0.675, how many white balls are there?\r
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\n" ); document.write( "\n" ); document.write( "How do I do this question? Help please.\r
\n" ); document.write( "\n" ); document.write( "Thank you.
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Algebra.Com's Answer #553152 by stanbon(75887)\"\" \"About 
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An urn contains 40 balls. Some are red balls and the rest are white balls.
\n" ); document.write( "If the probability of extracting a white ball is 0.675, how many white balls are there?
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\n" ); document.write( "Use a proportion::
\n" ); document.write( "x/40 = 675/1000
\n" ); document.write( "x = 40*0.675
\n" ); document.write( "x = 27
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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