22 Sarah's Muffler Shop has one standard muffler that fits a large variety of cars. Sarah wishes to establish a reorder point system to manage inventory of this standard muffler. Use the following information to determine the best order size and the reorder point:

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Annual demand Standard deviation of daily demand Item cost Annual holding cost 3,500 mufflers 6 mufflers per working day $30 per muffler 25% of item value Ordering cost Service probability Lead time Working days $50 per order 90% 2 working days 300 per year