Question
Some trees are placed along a street at equal distances. The distance between the 1st and the 5th tree is 28 m. The distance between the 1st and the last tree is 63 m. How many trees are there altogether?
4 m

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Some trees are placed along a street at equal distances. The distance between the 1st and the 5th tree is 28 m. The distance between the 1st and the last tree is 63 m. How many trees are there altogether?