Mathematics
Mathematics, 11.11.2020 21:40, skittles181927

Alone, Brenda can dig a ditch in 5 hours. If Jack helps her, the two of them can dig the ditch in 3 hours. How long would it take Jack to dig the ditch himself?

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Alone, Brenda can dig a ditch in 5 hours. If Jack helps her, the two of them can dig the ditch in 3...

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