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Romashka-Z-Leto [24]
2 years ago
13

A bag contains only red, blue, and green marbles. There are a total of 20 marbles in the bag, and the probability of NOT selecti

ng a blue marble is ¼. How many blue marbles are in the bag?
SAT
1 answer:
mihalych1998 [28]2 years ago
8 0

Based on the calculations, the number of blue marbles in this bag is equal to 15 blue marbles.

<u>Given the following data:</u>

  • Total number of marbles = 20 marbles.
  • Probability of not selecting a blue marble = ¼.

<h3>How to calculate the number of blue marbles?</h3>

In this exercise, you're required to calculate the number of blue marbles considering the fact that the probability of not selecting a blue marble from this bag is ¼.

First of all, we would determine the probability of actually selecting a blue marble from this bag as follows:

Probability = 1 - nP(B).

Probability = 1 - ¼.

Probability = ¾.

Now, we can calculate the number of blue marbles:

P(B) = total number of blue marbles/total number of marbles

¾ = B/20

4B = 60

B = 60/4

Blue marbles, B = 15 blue marbles.

Read more on probability here: brainly.com/question/12801413

#SPJ1

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