Question
Benches are placed at an equal distance from one another along the hallway. The distance between the 15th and the 30th bench is 11 m. What is the distance between the 1st and the 30th bench?
4 m

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Benches are placed at an equal distance from one another along the hallway. The distance between the 15th and the 30th bench is 11 m. What is the distance between the 1st and the 30th bench?