Little's Law $($Labor Cost Problem$).$ A call center employs $1,020$ agents. Every month $30$ employees leave the company and $30$ new employees are hired. Suppose the cost of hiring and training a new agent is $$600.$ the manager of this call center believes that increasing agents' salaries would keep them working longer at the company. The manager wants to increase the average time that an agent works for the call center to $36$ months, or three years. Determine the new ANNUAL cost for hiring and training.

Question $11$ options:

$$28\mathrm{.}3$

$$216,000$

$$204,000$

$$612,000$

Hide hint for Question $11$

Average working time $($T$)=36$ months $=3$ years $($With increased annual avg. working time, throughput rate, R will decrease$)$