Question
It takes Cathy 9 hours to sew a blazer by herself. If Jane helps her, they will take 7 hours to sew the blazer. How long will Jane take to sew the blazer by herself? Express your answer in mixed number.
3 m

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It takes Cathy 9 hours to sew a blazer by herself. If Jane helps her, they will take 7 hours to sew the blazer. How long will Jane take to sew the blazer by herself? Express your answer in mixed number.