c. Propose a better plan and cal 3. Continuing Problem 2, now assume that Carlton is per- mitted to employ some uncertified, part-time instruc- tors provided they represent no more than 15 percent of the total workforce hours (regular, overtime, and part time) in any quarter. Each part-time instructor can work up to 240 hours per quarter, with no overtime or under- time cost. Labor costs for part-time instructors are $12 per hour. Hiring and training costs are $2,000 per uncer- tified instructor, and there are no layoff costs. a. Propose a low-cost, mixed-strategy plan and calculate its total cost. b. What are the primary advantages and disadvantages of having a workforce consisting of both regular and temporary employees? 6