Alternative 2: Produce next 34,500 steel rings The special steel used in the manufacture of the rings has already been purchased and there is no alternative market for the raw steel. Since the scrap value of the steel used to make the rings is zero, the opportunity cost of the raw material is also zero. Thus, there is no further raw material cost They will incur the direct labor cost in this period and the wages that will additionally paid will be 30% of the regular wages = 46,8 *30% = The variable OH cost is 80% of direct labor costs = 14.04*80% = 11.23