Question
Some pupils are standing in a row an equal distance from one another. The distance between the 6th and the 9th pupil is 36 m. What is the distance between the 7th and the 13th pupil?
4 m

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Some pupils are standing in a row an equal distance from one another. The distance between the 6th and the 9th pupil is 36 m. What is the distance between the 7th and the 13th pupil?