A regional manufacturer of table lamps plans on using a manual kanban information system. On average the firm produces 1,200 lamps monthly Production lead time is 18 days, and the firm plans to have 15 percent buffer stock. Assume 20 working days per month If each container holds 15 lamps, what wil be the total number of kanban tickets required? What is the maximum WIP inventory the company can expect to have using this system? . Suppose that each lamp costs the firm $30 to produce. If the carrying costs are based on a 20 pernt annual interest rate, what annual carrying cost for WIP inventory is the company incurring?