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Example 12: There are birds on two trees. If a bird flew from first to second tree then there areequal number of birds in each tree. However if a bird flew from second to first tree then the birdson first tree are double then the birds on second tree. How many birds are on each tree?

Answer»

Let birds on first tree=xBirds on second tree=yx-1=y+1x-y=2 x=y+2x+1=2(y-1)x+1=2y-2x-2y=-3y+2-2y=-3-y=-5y=5x=7First tree had 7 birdsSecond tree had 5 birds

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