Mathematics
Mathematics, 09.02.2021 01:50, driskell3

It takes Kim 11 hours to proof a chapter of Hawkes Learning Systems' College Algebra book and it takes Nina 4 hours. How long would it take them working together? (Round your answer to two decimal places.)

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It takes Kim 11 hours to proof a chapter of Hawkes Learning Systems' College Algebra book and it tak...

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