Olguin Corporation produces a single product and has the following cost structure: Olguin produced 12,000 units during the year and sold 8,000 of these units. There was no beginning inventory. The actual variable cost per unit was $10.00 and the total manufacturing overhead was $320,000. Total fixed general, selling and administrative expenses was $360,000. NOTE: The total manufacturing overhead includes the $10.00 variable cost per unit cost. Required: Compute the unit cost under absorption costing. Compute the unit cost under variable costing. If the Olguin's product sell for $400 per unit calculate the per unit contribution margin