Consuelo Chua, Inc., is a disk drive manufacturer in need of an aggregate plan for July through

December. The company has gathered the following data:

What will each of the three following strategies cost?

a$)$ Vary the workforce so that production meets demand. Chua had $8$ workers on board in June.

b$)$ Vary overtime only and use a constant workforce of eight.

c$)$ Hire $2$ workers in August and $3$ more in October and using subcontractor to satisfy remaining

demand. Chua had $8$ workers on board in June.