Question
It takes Hazel 9 hours to sew a sweater by herself. If Hilda helps her, they will take 5 hours to sew the sweater. How long will Hilda take to sew the sweater by herself? Express your answer in mixed number.
3 m

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It takes Hazel 9 hours to sew a sweater by herself. If Hilda helps her, they will take 5 hours to sew the sweater. How long will Hilda take to sew the sweater by herself? Express your answer in mixed number.