Mathematics, 14.05.2021 17:40 megamorph
Workers at a library check the shelves to make sure that all books listed in the electronic catalog are accounted for. It takes an experienced worker 6 hours to check the shelves in a section of the library. It takes a newly hired worker 12 hours to check the same section of the library. How many hours would it take the two workers to check the shelves together in this section of the library?
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