Question
18 pupils are standing in a row at an equal distance from one another. The distance between the 4th and the 9th pupil is 50 m. How far apart is the 4th pupil and the last pupil?
4 m

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18 pupils are standing in a row at an equal distance from one another. The distance between the 4th and the 9th pupil is 50 m. How far apart is the 4th pupil and the last pupil?