Sam's Pet Hotel operates 49 weeks per year, 6 days per week. It purchases kitty litter for $6.50 per bag. The following information is available about these bags: > Demand =55 bags / week > Order cost =$70 /order > Annual holding cost =30 percent of cost > Desired cycle-service level =90 percent > Lead time =4 week (s) ( 24 working days) > Standard deviation of weekly demand =4 bags > Current on-hand inventory is 250 bags, with no open orders or backorders. Suppose that Sam's Pet Hotel uses a P system. The average daily demand, d, is 9 bags (55/6), and the standard deviation of daily demand, DaysperWeekStandardDeviationofWeeklyDemand, is 1.633 bags. Refer to the standard normal table for z-values. a. What P (in working days) and T should be used to approximate the cost trade-offs of the EOQ? The time between orders, P, should be days. (Enter your response rounded to the nearest whole number.)