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3 years ago

12

Cody is selling chocolate and white chocolate candy bars for a school fundraiser. 30% of the candy bars sold have been white cho

colate. If Cody has sold 24 white chocolate candy bars, how many total candy bars has he sold?

1 answer:

bogdanovich [222]3 years ago

3 0

30% of 24 is 7.2, which can be rounded to 7 white chocolate candy bars.

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Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a student is proficient in reading

B is the probability that a student is proficient in mathematics.

C is the probability that a student is proficient in neither reading nor mathematics.

We have that:

$A = a + (A \cap B)$

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$(A \cup B) = a + b + (A \cap B)$

65% were found to be proficient in both reading and mathematics.

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This means that $B = 0.78$

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