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Birds in Trees
Puzzles > Algebra Puzzles
There are 2 trees in a garden (tree "A" and "B") and on the both trees are some birds.
The birds of tree A say to the birds of tree B that if one of you comes to our tree, then our population will be the double of yours.
Then the birds of tree B tell to the birds of tree A that if one of you comes here, then our population will be equal to that of yours.
Now answer: How many birds in each tree? 
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