Question
Desks are arranged at an equal distance from one another. The distance between the 2nd and the 3rd desk is 9 m. What is the distance between the 4th and the 13th desk?
4 m

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Desks are arranged at an equal distance from one another. The distance between the 2nd and the 3rd desk is 9 m. What is the distance between the 4th and the 13th desk?