Irina’s department has 120,000 hours of work to complete for the next year. each employee is expected to work 2,000 hours per year. 80,000 hours can be completed in the first 8 months, then the remaining 40,000 hours must be completed in the last 4 months. irina plans to add temporary employees to her team to handle the additional work in the last 4 months. approximately how many temporary employees will irina need to hire to assist her full-time employees?