Question
Roshel and Penelope take 2 hours to clean the villa together. If Roshel takes 4 hours to clean the villa on her own, how long will it take Penelope to clean the villa alone?
3 m

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Roshel and Penelope take 2 hours to clean the villa together. If Roshel takes 4 hours to clean the villa on her own, how long will it take Penelope to clean the villa alone?