document.write( "Question 1048342: A bag contains 10 red marbles, 7 green marbles, 9 black marbles.
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Algebra.Com's Answer #663956 by Edwin McCravy(20060) $\"\"$ $\"About$

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A bag contains 10 red marbles, 7 green marbles, 9 black marbles.
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document.write( "There are 10+7+9=26 marbles. There are 10 red marbles. \r\n" );
document.write( "Therefore 10 times out of 26 we will draw a red marble \r\n" );
document.write( "first.  That's 10/26ths of the time or 5/13ths of the \r\n" );
document.write( "time.\r\n" );
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document.write( "Of those 5/13ths of the time that we draw a red marble\r\n" );
document.write( "first, we don't put it back and so there are only 25\r\n" );
document.write( "marbles of which 9 are black.  So 9 times out of 25, or\r\n" );
document.write( "9/25ths of those 5/13ths of the time we will draw a \r\n" );
document.write( "black marble second.\r\n" );
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document.write( "So we will succeed 9/25ths of 5/13ths of the time.\r\n" );
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document.write( "That's   \r\n" );
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document.write( "So we will succeed 9/65ths of the time.\r\n" );
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document.write( "Edwin

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