SOLUTION: There is a 3/4 chance that my trash will be taken out. There is a 1/2 chance that my room will be swept. There is a 3/8 chance that both my trash will be taken out and the room wil

Algebra ->  Probability-and-statistics -> SOLUTION: There is a 3/4 chance that my trash will be taken out. There is a 1/2 chance that my room will be swept. There is a 3/8 chance that both my trash will be taken out and the room wil      Log On


   

Question 873246: There is a 3/4 chance that my trash will be taken out. There is a 1/2 chance that my room will be swept. There is a 3/8 chance that both my trash will be taken out and the room will be swept. What is the probability that at least either my trash will be taken out or my room will be swept.?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

 P(A or B) = P(A) + P(B) - P(A and B)

P(T 0r S) = 3/4 + 1/2 - 3/8    

          = 6/8 + 4/8 - 3/8

          = 7/8