We planted a tree at the starting point on both sides. These two trees have nothing to do with the length of the road. In the future, every tree we plant, no matter which side we plant, will increase the spacing along the planting route. For simplicity, we will consider planting trees on one side.
Plant trees at a spacing of 3 meters, and finally there are 3 trees left, which means that the planting route is 3 grids longer than the road, and 3×3=9 meters. Planting trees at a spacing of 2.5 meters resulted in 37 trees missing, which means that the planting route is 37 spaces shorter than the road.
Extended data:
Thematic analysis: The problem of online tree planting can be divided into the following three situations.
1. If trees are planted at both ends of the tree planting line, the number of trees planted should be more than the number of segments to be divided 1, that is, the number of trees = the number of intervals+1.
2. If only one end of the tree planting line is planted with trees, then the number of trees is equal to the number of segments to be divided, that is, the number of trees = the number of intervals.
3. If no trees are planted at both ends of the tree planting line, the number of trees planted is less than the number of segments to be divided 1, that is, the number of trees = the number of intervals-1.
4. If trees are planted on both sides and ends of the tree planting route, the number of trees planted should be more than the number of segments to be divided 1, and then multiplied by 2, that is, trees = number of segments+1 and then multiplied by 2.
Baidu encyclopedia-planting trees