Question
It takes Nicole 9 hours to sew a blouse by herself. If Diana helps her, they will take 4 hours to sew the blouse. How long will Diana take to sew the blouse by herself? Express your answer in mixed number.
3 m

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It takes Nicole 9 hours to sew a blouse by herself. If Diana helps her, they will take 4 hours to sew the blouse. How long will Diana take to sew the blouse by herself? Express your answer in mixed number.