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Mathematics, 21.04.2020 03:18 tatiiiee
Josephine can correct her students test papers in 7 hours, but if her teacher's assistant helps, it would take them 4 hours. How long would it take for the assistant to do it alone?
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Answers: 2
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Josephine can correct her students test papers in 7 hours, but if her teacher's assistant helps, it...
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