Question
Esther and Fanny take 2 hours to clean the house together. If Esther takes 5 hours to clean the house on her own, how long will it take Fanny to clean the house alone?
3 m

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Esther and Fanny take 2 hours to clean the house together. If Esther takes 5 hours to clean the house on her own, how long will it take Fanny to clean the house alone?