Question
Jane and Kimberly take 4 hours to clean the house together. If Jane takes 5 hours to clean the house on her own, how long will it take Kimberly to clean the house alone?
3 m

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Jane and Kimberly take 4 hours to clean the house together. If Jane takes 5 hours to clean the house on her own, how long will it take Kimberly to clean the house alone?