Cost of Goods Manufactured, using Variable Costing and Absorption Costing On December 31, the end of the first year of operations, Frankenreiter Inc, manufactured 1,600 units and sold 1,400 units. The following income statement was prepared, based on the variable costing concept: Determine the unit cost of goods manufactured, based on (a) the variable costing concept and (b) the absorption costing concept. Variable csting Absorption costing