Assignment:
A new registration manager, Dwayne Cole, is hired who initiates a program to entertain the people in line with a juggler whom he pays $15/hour. This reduces the waiting costs to $50 per hour.
a) What is the optimal number of servers?
b) What is the cost for the system, per hour, at the optimal service level?
Provide complete and step by step solution for the question and show calculations and use formulas.