Birds on the Other Tree
Algebra
Level
1
Some birds are sitting on the branches of tree A and tree B. If two birds flew from tree A to tree B and sit there, there would be an equal number of birds on both trees.
How many more birds are there on tree A than on tree B now?
1
2
4
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1 solution
Let there are X and Y birds on trees respectively now since two birds fly from tree A to tree B , X-2=y+2, x-y=4 .