SOLUTION: Events A and B are independent. find the missing probability. P(B)=13/20 P(A and B)= 117/400 P(A)=?

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Question 1033706: Events A and B are independent. find the missing probability.
P(B)=13/20 P(A and B)= 117/400 P(A)=?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
P(A and B) = P(A)*P(B)
==> P(A) = P(A and B)/P(B) = %28117%2F400%29%2F%2813%2F20%29+=+9%2F20, being given independence of A and B.