The Chattanooga Furniture store gets an average of 80 customers per shift. Marilyn? Helms, the? manager, wants to calculate whether she should hire 1, 2, 3, or 4 salespeople. She has determined that average waiting times will be 8 minutes with one? salesperson, 6 minutes with two? salespeople, 4 minutes with three? salespeople, and 2 minutes with four salespeople. She has estimated the cost per minute that customers wait at $2. The cost per salesperson per shift? (including fringe? benefits) is $60.
One? Server:
Total cost per shift? = _____dollars.
Two? Servers:
Total cost per shift? = _____ dollars.
Three? Servers:
Total cost per shift? = _____ dollars.
Four? Servers:
Total cost per shift? = _____ dollars.
Based on the given? information, Marilyn has minimum total cost per shift with ______ salespeople.