If A and B are two events such that P(A̅) = 0.3, P(B) = 0.4, P(A ∩ B̅) = 0.5, then find the value…

If $A$ and $B$ are two events such that $P(\bar{A}) = 0.3$, $P(B) = 0.4$, $P(A \cap \bar{B}) = 0.5$, then find the value of $P(B / (A \cup \bar{B}))$.