Grace Incorporated, Which Uses an Operation-Costing System, Has Three Processing

Grace Incorporated, which uses an operation-costing system, has three processing departments. All units pass through Department No. 1; upon completion, 60% of the goods are sent to Department No. 2 and 40% are sent to Department No. 3. Additional data follow.
Fifty thousand units were manufactured during the year.
Conversion costs in each department were: No. 1, $400,000; No. 2, $216,000; and No. 3, $170,000.
Batch No. A535, which consisted of 700 units, was sent to Department No. 3 for its additional processing. Direct materials of $24,500 and $12,900 were introduced to this batch in Department Nos. 1 and 3, respectively.
Grace assigns conversion costs to goods manufactured on the basis of units produced.
Required:
A. Determine the conversion cost per unit in Department no. 1, Department no. 2, and Department no. 3.
B. Compute the total cost of batch no. A535.
C. Operation costing is sometimes referred to as a hybrid costing system. Briefly explain.