document.write( "Question 101000: What is the probability of drawing a yellow marble or a red marble from a bag containing 12 yellow marbles, 16 red marbles, and 15 green marbles? \n" ); document.write( "
Algebra.Com's Answer #73518 by bucky(2189)\"\" \"About 
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This problem is worded a little badly, so let's answer it as best we can.
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\n" ); document.write( "There is a total of 43 marbles in the bag (12 + 16 + 15 = 43). Since there are 12 yellow
\n" ); document.write( "marbles in the bag, the probability of reaching into the bag and blindly drawing a yellow
\n" ); document.write( "marble is 12 out of 43 or 12 divided by 43 which is approximately 0.2791 which is equivalent
\n" ); document.write( "to 27.91 percent.
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\n" ); document.write( "Similarly, the probability of reaching into the bag and blindly drawing a red marble is
\n" ); document.write( "16 out of 43 (since there are 16 red marbles) and this is 16 divided by 43 which is approximately
\n" ); document.write( "0.3721 or 37.21 percent.
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\n" ); document.write( "If the problem meant that you reach into the bag and what are the chances that you draw
\n" ); document.write( "either a yellow or a red marble, then you have a 28 out of 43 chance of being successful
\n" ); document.write( "because the total number of marbles you could draw is 12 yellow plus 16 red which is
\n" ); document.write( "28 marbles of the total 43 marbles. And 28 divided by 43 is approximately 0.6512 or 65.12 percent.
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\n" ); document.write( "Notice that this probability is equal to the sum of the probability of drawing a yellow
\n" ); document.write( "marble plus the probability of drawing a red marble (27.91 + 37.21 = 65.12 percent.)
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\n" ); document.write( "Hope this helps you to understand the problem.
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