Q: A neighborhood association decided to plant a tree on every street. There are eighteen streets in the neighborhood. The association wanted every other tree to be a fruit tree, and they agreed to plant equal numbers of plum, pear, and apricot trees. How many of each kind of tree will they plant?
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A: Every other tree is half the trees, so there will be 18 / 2 = <<18/2=9>>9 fruit trees planted.
The association is planting three kinds of fruit trees, so they will plant 9 / 3 = <<9/3=3>>3 of each kind of tree. The answer is  3.
assistant