Razer has determined that the annual demand for motherboard screws is 120,000 screws and a daily demand of 500 screws. Razer as the purchasing officer estimates that it costs Php 120 every time an order is placed. He also estimates that the cost of carrying one screw in inventory for a year is Php 0.80. It takes approximately 15 working days for an order of motherboard screws to arrive once an order is placed. a. How many motherboard screws should Razer order at a time if he wishes to minimize total inventory cost? b. What would be the annual total inventory cost? c. What is the reorder point? I Butingting Computers produces all kinds of computer hardware. Sam Sung, the president of Butingting is concerned about the production policy for the company's best - selling hard drive. The demand for this has been relatively constant at about 10,000 units each year. The production capacity is 250 units per day. Each time production starts, it costs the company Php 150,000 to move materials into place, reset the assembly line, and clean the equipment. The holding cost of a hard drive is Php 8,000 per year. The daily demand of the hard drive is 175 units per day. A. What is the optimal production quantity? B. How long will it take to produce the optimal quantity? C. How much is the annual total inventory cost? I Berta is considering adding a second teller (who would work at the same rate as the first) to reduce the waiting time for customers, and he assumes that this will cut the waiting time in half. If a second teller is added, find the following: a What is the average time a customer waits in line? (in minutes) b. What is the average time a customer spends in completing his transaction? (in minutes) C. The salary and benefits for a teller would be Php320 per day. The bank is open 8 hours each day. It has been estimated that the waiting time cost per hour is Php80 per hour in the line If Berta wishes to minimize the total waiting cost and personnel cost, how many tellers should be used