SOLUTION: If P(A or B) = 0.8, P(A) = 0.8 and P(B) = 0.5, determine P(A and B). 1. 0.35 2. 0.50 3. 0.64 4. 0.13 Could I have some help, please?

Algebra ->  Probability-and-statistics -> SOLUTION: If P(A or B) = 0.8, P(A) = 0.8 and P(B) = 0.5, determine P(A and B). 1. 0.35 2. 0.50 3. 0.64 4. 0.13 Could I have some help, please?       Log On


   

Question 491066: If P(A or B) = 0.8, P(A) = 0.8 and P(B) = 0.5, determine P(A and B).
1. 0.35
2. 0.50
3. 0.64
4. 0.13
Could I have some help, please?
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

P(A and B) = P(A) + P(B) - P(A U B) =+0.80+%2B+0.50+-+.8+=+0.50