2. [10 points] The quantity 1/W = N/L is often referred to as the turnover ratio. A certain Japanese company has 36,000 employees, 20% of whom are women. The average term of employment for a woman is 37 months, whereas for men it is 200 months. Assume that the total employment level and the mix of men and women are stable over time. What is the labour turnover during a year? 3. [10 points] A typical story: a bank's branch has only one employee, who happens to be the teller (that's it). Records show that, typically, there are 2 customers in the bank with a typical customer spending 10 minutes in a visit. The management system also show that the typical queue length is 1.5. What is the typical amount of time the teller spends in serving one customer