Answer:
P(B) = 0.55 .
Step-by-step explanation:
We are given that P(A or B) = 0.6 , P(A) = 0.4 , and P(A and B) = 0.35 .
As we know that;
P(A or B) = P(A) + P(B) - P(A and B)
0.6 = 0.4 + P(B) - 0.35
P(B) = 0.35 + 0.6 - 0.4 = 0.55
Therefore, P(B) = 0.55 .
