document.write( "Question 280037: a box contains 7 large red marbles 5 large yellow marbles 3 small red marbles and 5 small yellow marbles. if a marble is drawn at random what is the probability that is yellow, given that it is one of the large marbles \n" ); document.write( "
Algebra.Com's Answer #203584 by checkley77(12844)\"\" \"About 
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7+5+3+5=20 total marbles.
\n" ); document.write( "5/20=1/4=.25 or 25% chance of selecting a large yellow marble.
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