A manager must set up inventory ordering systems for two new production items, P34 and P35. P34 can be ordered at any time, but P35 can be ordered only once every four weeks. The company operates 50 weeks a year, and the weekly usage rates for both items are normally distributed. The man-ager has gathered the following information about the items:

a. When should the manager reorder each item?
b. Compute the order quantity for P34.
c. Compute the order quantity for P35 if 110 units are on hand at the time the order isplaced.

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Average weekly demand Standard deviation Unit cost Annual holding cost Ordering cost Lead time Acceptable stockout risk ltem P34 60 units 4 units per week $15 30% $70 2 weeks Item P35 70 units 5 units per week $20 30% $30 2 weeks 2.5%