SOLUTION: The probability of passing the math class of Professor Jones is 62%, the probability of passing Professor Smith's physics class is 38%, and the probability of passing both is 30%.

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Question 1027859: The probability of passing the math class of Professor Jones is 62%, the probability of passing Professor Smith's physics class is 38%, and the probability of passing both is 30%. What is the probability of passing one or the other?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
P(math or physics) = P(math) + P(physics) - P(math and physics)
0.62 + 0.38 - 0.30 = 0.70.