There are two trees [A&B] with few birds on each of them. Birds from tree A says,"If one bird comes from your tree to ours, our population will be double of yours". Then a bird from tree B says,"If one bird comes from your tree to ours, our population will be equal to yours". How many birds are on each tree?

Please type Answer in A.B format i.e. if A=1,B=2 then Ans=1.2

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