Consuelo Chua, Inc., is a Columbian disk drive manufacturer in need of an aggregate plan for July through December. The company has gathered the following data given in the tables. There are 8 hours of production per day. You manage a consulting firm down the street from Consuelo Chua, Inc., and to get your foot in the door, you have told Ms. Chua that you can do a better job at aggregate planning than her current staff. She said, "Fine. You do that, and you have a 1-year contract." To make good on your boast, you propose a new strategy. Hire 5 workers in August and 5 more in October, and subcontract to meet the rest of the demand. What will be the cost of this strategy? Costs Holding cost Subcontracting Regular-time labor Overtime labor Hiring cost Layoff cost Month 0 June 1 July $9/disk drive/Month $80/disk drive $12 2 August 3 September 4 October 5 November 6 December $18/hour (above 8 hours) $40/worker $80/worker Fill in the table below. (Enter all responses as whole numbers. In the hire/fire column, use positive numbers for hires-plus signs omitted; negative numbers for layoffs.) Demand. 420 480 550 560 750 720 Other data Current workforce (June) 8 people Labor-hours/disk drive 4 hours Workdays/month Beginning Inventory Ending Inventory "Note that there is no holding cost for June. Beginning Inventory 150 20 days 150 disk drives 0 disk drives Units Produced Personnel on Hire / Layoff Staff 8 Ending Inventory