Mathematics, 28.10.2019 10:31, que40

2
a bag contains only red and blue marbles. yasmine takes one marble at random from the bag. the probability that she takes a red marble is 1 in 5. yasmine returns the marble to the bag and adds ﬁve more red marbles to the bag. the probability that she takes one red marble at random is now 1 in 3. how many red marbles were originally in the bag?
10 red
3 red
5 red
2 red

Answers: 1

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a bag contains only red and blue marbles. yasmine takes one marble at random from the bag. t...