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

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Raeann and Nicole take 2 hours to clean the flat together. If Raeann takes 4 hours to clean the flat on her own, how long will it take Nicole to clean the flat alone?