Liliana has a bag of marbles. the bag contains 18 black, 15 red, 11 blue, and 8 white marbles. liliana randomly takes a red marble from the bag and leaves the marble on a table. what is the probability that she will next take a red or a white marble from the bag?

Question

Mathematics

Priscilla

1 September, 09:47

Liliana has a bag of marbles. the bag contains 18 black, 15 red, 11 blue, and 8 white marbles. liliana randomly takes a red marble from the bag and leaves the marble on a table. what is the probability that she will next take a red or a white marble from the bag?

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Roberto Vega · Answer 1

Since you took a red marble from the bag and didn't put it back, you now only have 14 red marbles to pick out of, and the total number of marbles i in your bag is only 51. Probability of choosing red or white is:

(14/51) + (8/51) = 22/51