Question
Oscar and Ahmad, together, can clean a hut in 5 hours. If Oscar is cleaning the hut alone, he can only complete the task in 7 hours. How long will Ahmad take to clean a hut all by himself? Express your answer in mixed number.
3 m

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Oscar and Ahmad, together, can clean a hut in 5 hours. If Oscar is cleaning the hut alone, he can only complete the task in 7 hours. How long will Ahmad take to clean a hut all by himself? Express your answer in mixed number.