finished valves are inspected before being packaged and shipped to customers. Rejected valves are returned to the initial production stage to be melted and recast. Such rework requires no new materials in casting but requires new materials in finishing.

The following unit cost data for direct materials, direct labor, and time$-$driven activity$-$based costing $($ABC$)$ are available:

$\backslash$table$[[$Costs$,$Casting,Finishing,Inspection,Packing,Total$],[$Direct materials,$$225,$$$12,$$$0,$$$8,$$$245$