What are the answers to A, B1, B2, B3?

A call center employs 1,100 agents. Every month 50 employees leave the company and 50 new employees are hired. . How long. on average, does an agent work for this call center? Suppose the cost of hiring and training a new agent is $1,000. 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 24 months, or two years. b-1. Given the current average working time for agents at this call center, determine the current annual cost for hiring and training. b-2. Assuming the average time that an agent works for the call center is increased to 24 months, determine the new annual cost for hiring and training. b-3. If the time an agent works for the call center is increased to 24 months on average, how much could the company save on hiring pnd training costs over a year