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Nine bus stops are equally spaced along a certain bus route. The distance between the first stop and the third stop is $$600$$ m. How long is the bus route? ($$2004$$ Math kangaroo Problem, Level $$5-6$$, Question \#$$9$$) 
Overseas Competition->Knowledge Point->Word Problem Modules->Interval Problems->Straight Line Type with Objects on Both Sides->Planting Trees on Both Sides
Each interval is $600\div2=300$ m. There are $9-1=8$ intervals in total, so the bus route\textquotesingle s length is $300\times8=2400$ m. 