A new grocery store has 3 weeks to train its full staff of 39 employees. There are 5 employees now. At least 2 employees must work on preparing the store during the next week, 5 employees the week after, and 10 in the final week before opening. Employees assigned to these duties earn $300 per week. Any other available employees, including those who were themselves trained in just the preceding week, can be assigned to train new workers. If an employee trains just one other, the two of them cost

$500 for the week. If two are trained, the three employees cost $800 per week, including trainer overtime. Managements seeks a minimum total cost plan to meet all requirments.

Do

(a) through

(d) as in Exercise 10-48. You may use nonzero lower bounds on some variables.