SOLUTION: If events A and B are mutually exclusive and the P(A) = 3 over 4 and the P(B) = 1 over 8 , what would be the P(A or B)?

Algebra ->  Probability-and-statistics -> SOLUTION: If events A and B are mutually exclusive and the P(A) = 3 over 4 and the P(B) = 1 over 8 , what would be the P(A or B)?       Log On


   

Question 1021625: If events A and B are mutually exclusive and the P(A) = 3 over 4 and the P(B) = 1 over 8 , what would be the P(A or B)?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
P(A or B) = P(A) + P(B) - P(A and B) = 3/4 + 1/8 - (3/4)(1/8) = 7/8 - 3/32 =
25/32