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Mathematics, 07.02.2021 18:20 topangabraith

Working together, two ants named Aran and Beatrice can build an anthill in 10 hours. Aran and Charlie can build the anthill in 12 hours. Beatrice and Charlie can build the anthill in 15 hours. How long, in hours, will it take to build the anthill if Aran, Beatrice, and Charlie work together?

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