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

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