Inventory Valuation under Absorption Costing and Variable Costing

At the end of the first year of operations, $18,000$ units remained in the finished goods inventory. The unit manufacturing costs during the year were as follows:

Determine the cost of the finished goods inventory reported on the balance sheet under $($a$)$ the absorption costing concept and $($b$)$ the variable costing concept.

Absorption costing $$

Variable costing $