Question
5 students rented 4 fishing rods from 8.30 p.m. to 8.50 p.m. and took turns to fish on them. At any time, 4 of them fished using the fishing rods while the other student watched. If each of them had the same amount of time to fish, how many minutes did each student get?
2 m

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5 students rented 4 fishing rods from 8.30 p.m. to 8.50 p.m. and took turns to fish on them. At any time, 4 of them fished using the fishing rods while the other student watched. If each of them had the same amount of time to fish, how many minutes did each student get?