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
--------------------------------------------
P(geo and math) = P(geo) + P(math) - P(geo or math)
= 0.53 + 0.43 - 0.76
= 0.96 = 0.76
= 0.20
===============================
Cheers,
Stan H.
(