Question
10 workers take 9 hours to build 5 bookshelves. How many hours will 4 workers take to build 5 bookshelves? Express your answer in mixed number in hours.
3 m

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10 workers take 9 hours to build 5 bookshelves. How many hours will 4 workers take to build 5 bookshelves? Express your answer in mixed number in hours.