Find the indicated probability If P(A or B) = 0.7, P(A) = 0.3, and P(A and B) = 0.15, find P(B) Thank you

P(A or B) = P(A) + P(B) - P(A and B) 

P(B) = P(A and B)+ P(A or B)-P(A)= 


0.15 + 0.70 - 0.3 = 


0.55 


:)