SOLUTION: Suppose the probability of A is .3, the Probability of B is .45 and the probability of P(A or B)=.7; what is the probability of A and B, that is P(A and B)?

SOLUTION: Suppose the probability of A is .3, the Probability of B is .45 and the probability of P(A or B)=.7; what is the probability of A and B, that is P(A and B)?

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Question 273346: Suppose the probability of A is .3, the Probability of B is .45 and the probability of P(A or B)=.7; what is the probability of A and B, that is P(A and B)?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Remember that P(A or B) = P(A) + P(B) - P(A and B). So simply solve for P(A and B) to get

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

Now just plug in the given values and simplify.
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