The manager of a bookstore ordered 480 copies of a book. The manager paid a total of $7440 for the books. The books arrived at the store and five cartons. Each card and contain the same number of books. A workaround packed books at a rate of 48 bucks every two minutes. The manager on tax books at a rate of 54 bucks every three minutes. How many minutes did the worker need to unpack 200 bucks? Enter your answer in the space provided enter only your answer.