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a box has 7 purple grapes and 5 green grapes. a bag has 3 green grapes...

a box has 7 purple grapes and 5 green grapes. a bag has 3 green grapes and 3 purple grapes. suppose a grape is randomly chosen from the box and transferred to the bag. then, a grape is randomly chosen from the bag. if a green grape is chosen, what is the probability that a green grape was transferred?? please show work thanks

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