Rhonda has a bag of marbles that are all of tge same size. The bag contains 5 green marbles, 7 blue marbles, and 4 white marbles. How many white marbles must she add to the bag so that the probability of her randomly drawing a white marble is 1/2
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add four more white marbles because total marbles at present are 16and white marbles are 4.So if you add 4 white marbles probability will be 1\2.
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