Lean Accounting The annual budgeted conversion costs for a lean cell are $663,600 for 2,800 production hours. Each unit produced by the cell requires 6 minutes of cell process time. During the month, 2,960 units are manufactured in the cell. The estimated materials cost is $36 per unit. Provide the following journal entries: a. Materials are purchased to produce 3,120 units. b. Conversion costs are applied to 2,960 units of production. c. 2,810 units are completed and placed into finished goods. a. b