Question
It takes Raeann 7 hours to sew a jacket by herself. If Zoe helps her, they will take 2 hours to sew the jacket. How long will Zoe take to sew the jacket by herself? Express your answer in mixed number.
3 m

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It takes Raeann 7 hours to sew a jacket by herself. If Zoe helps her, they will take 2 hours to sew the jacket. How long will Zoe take to sew the jacket by herself? Express your answer in mixed number.