Question
Lee and Sam, together, can clean a living room in 3 hours. If Lee is cleaning the living room alone, he can only complete the task in 9 hours. How long will Sam take to clean a living room all by himself? Express your answer in mixed number.
3 m

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Lee and Sam, together, can clean a living room in 3 hours. If Lee is cleaning the living room alone, he can only complete the task in 9 hours. How long will Sam take to clean a living room all by himself? Express your answer in mixed number.