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Martin has an empty bag and puts in 3 red marbles. He now wants to put in enough green marbles so the probability of drawing a red marble at random from the bags is 1⁄4. How man…

Martin has an empty bag and puts in 3 red marbles. He now wants to put in enough green marbles so the probability of drawing a red marble at random from the bags is 1⁄4. How man…
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Martin has an empty bag and puts in 3 red marbles. He now wants to put in enough green marbles so the probability of drawing a red marble at random from the bags is 1⁄4. How many green marbles should he put in?

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User Bensentropy
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7.0k points

2 Answers

7 votes
he put 11 green marbles in the bag

answered
User Alex Munoz
by
8.2k points
4 votes
9 green marbles, (pretty sure)
if the three red marbles only makes 1/4 of the bag you put in 3/4's of green (9)
answered
User JaKu
by
8.0k points
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