SOLUTION: Ron has a 53% chance of receiving an A grade in geology, a 43% chance of receiving an A grade in mathematics, and a 76% chance of receiving an A grade in geology or mathematics (or

Question 180363: Ron has a 53% chance of receiving an A grade in geology, a 43% chance of receiving an A grade in mathematics, and a 76% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology and mathematics.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Ron has a 53% chance of receiving an A grade in geology, a 43% chance of receiving an A grade in mathematics, and a 76% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology and mathematics
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P(geo and math) = P(geo) + P(math) - P(geo or math)
= 0.53 + 0.43 - 0.76
= 0.96 = 0.76
= 0.20
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Cheers,
Stan H.
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