Events A A\,A and B B\,B satisfy P(A)=0.4P(A)=0.4P(A)=0.4, P(B)=0.5P(B)=0.5P(B)=0.5 and P(A∩B)=0.3P(A\cap B)=0.3P(A∩B)=0.3.
Find P(A∪B)P(A\cup B)P(A∪B).