SOLUTION: If P(E)= 0.50, P(E or F)= 0.70, and P(E and F)= 0.10. Find P(F)

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Question 732751: If P(E)= 0.50, P(E or F)= 0.70, and P(E and F)= 0.10. Find P(F)
Answer by stanbon(75887) About Me  (Show Source):
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If P(E)= 0.50, P(E or F)= 0.70, and P(E and F)= 0.10. Find P(F)
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P(E or F) = P(E)+P(F)-P(Eand F)
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0.7 = 0.5 + P(F) - 0.10
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P(F) = 0.7-0.5+0.1
P(F) = 0.3
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Cheers,
Stan H.