Janice Weller, the manager of the customer service at the First Bank of Jefferson County, can hire employees with a high school diploma for $20,000 annually and employees with a bachelor's degree for $30,000. She wants to maximize the number of customers served, given a fixed payroll. The following table shows how the total number of customers served varies with the number of employees.

Total number of customers served

Employees HS diploma (TB_HS) BA degree(TB_BA) MB_HS MB_BA. MB_HS/ Wage. MB_BA/Wage

1 120 100 120. 100 .006000 .003333

2 220 190 100 90 .005000 .003000

3 300 270 80 80 .004000 .002677

4 370 330 70 60 .003500 .002000

5 430 380 60 50 .003000 .001666

6 470 410 40 30 .002000 .001000

Where: TB_HS= total number of customers served by employees with HS diploma

TB_BA= total number of customers served by employees with BA degree

MB_HS= Additional or marginal number of customers served by employees with HS diploma

MB_BA= Additional or marginal number of customers served by employees with BA degree

a.If Ms. Waller has a payroll of $160,000, how should she allocate this budget in order to maximize the number of customers served?

b.What is the total number of customers served in Employee 1?

c.If her budget is increased to $240,000, how should she allocate this higher budget to maximize the number of customers served?

d. What is the total number of customers served in Employee 3?