SOLUTION: Given that P(A or B) = 1/5, P(A) = 1/6, and P(A and B) = 1/8, find P(B)

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Question 844348: Given that P(A or B) = 1/5, P(A) = 1/6, and P(A and B) = 1/8, find P(B)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, Previously Posted

Let x represent P(B)

 +1%2F6+%2B+x+-+1%2F8+=+1%2F5+    |Multiplying thru by 120so as all denominators = 1

20 + 120x - 15 = 24

      120x = 19

         x = 19/120