Can someone help me solve this?

12.8) Identify the constraining department. (Obj. 6). Maine Arm Chair Company B three departments. The Assembling Department has three employees who spend 15 minutes on each unit of product. The Stuffing Department has two employees who spend 12 min- utes on each unit of product. The Sewing Department has f minutes per unit of product. All departments work one eight-hour shift per day. All moves through the three departments in the order in which they are listed. our employees who spend 16 product a. Which is the constraining department? b. What is the maximum output for the company per day? c. What is the daily backlog accumulation, if all departments produce at capacity? d. Which department will necessarily have idle time? Why