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

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