Final answer:
Under super-variable costing, the unit product cost is $28, considering only direct materials. Under variable costing, it's $43, adding variable direct labor to direct materials. Under absorption costing, it's $58.90, including direct materials, variable direct labor, and fixed manufacturing overhead per unit. Income statements and reconciliation of net operating incomes differ due to the treatment of fixed manufacturing overhead and units sold versus produced.
Step-by-step explanation:
To compute the unit product cost for the year under super-variable costing and prepare the requested income statements we need to follow the required costing methods. When variable costing is used, only the variable manufacturing costs are assigned to the product. When absorption costing is used, both variable and fixed manufacturing costs are assigned to the product.
Super-Variable Costing
Under super-variable costing, only the variable costs, such as direct materials costs, are considered in the unit product cost. However, since super-variable costing is not a standard costing method, we assume it to be similar to direct costing where only direct materials are factored into the unit cost.
Unit Product Cost: Direct Materials = $28
Variable Costing
Unit Product Cost: Direct Materials + Variable Direct Labor = $28 + $15 = $43
Absorption Costing
Unit Product Cost: Direct Materials + Variable Direct Labor + Fixed Manufacturing Overhead per Unit = $28 + $15 + $15.90 = $58.90
The income statement under each method would list out sales, variable costs, and fixed costs to calculate net income, which are unique based on the costing method utilized.
Reconciliation of Incomes
The reconciliation between the net operating incomes of different costing methods primarily involves the treatment of fixed manufacturing overhead costs and the number of units sold versus produced.