Trio Company reports the following information for the current year, which is its first year of operations. Direct materials $15 per unit
Direct labor $16 per unit

Overhead costs for the year:
Variable overhead $4 per unit
Fixed overhead $160,000 per year
Units produced this year 20,000 units
Units sold this year 14,000 units
Ending finished goods inventory in units 6,000 units

Required:
a. Compute the cost per unit using absorption costing and then using variable costing.
b. Determine the cost of ending finished goods inventory using absorption costing and then using variable costing.
c. Determine the cost of goods sold using variable costing and then using variable costing.