P3. Pratt Corporation uses the weighted average method in its process costing system. There are two processing departments in the company. Data concerning the first processing department for the most recent month are listed below: Instructions: For the 1st department, compute 1. COGM in total and per unit using the average method. 2. Costs of E/I using the average method. 3. COGM in total and per unit using the FIFO method. 4. Costs of E/I using the FIFO method. For the 2nd department, compute 5. COGM of 8,200 units completed in the 2nd department using the average method