OBrien Company manufactures and sells one product. The following information pertains to each of the companys first three years of operations:

Variable costs per unit:
Manufacturing:
Direct materials	$	30
Direct labor	$	15
Variable manufacturing overhead	$	4
Variable selling and administrative	$	3
Fixed costs per year:
Fixed manufacturing overhead	$	510,000
Fixed selling and administrative expenses	$	180,000

During its first year of operations, OBrien produced 92,000 units and sold 78,000 units. During its second year of operations, it produced 75,000 units and sold 84,000 units. In its third year, OBrien produced 80,000 units and sold 75,000 units. The selling price of the companys product is $80 per unit.

Required:

1. Assume the company uses variable costing and a FIFO inventory flow assumption (FIFO means first-in first-out. In other words, it assumes that the oldest units in inventory are sold first):

a. Compute the unit product cost for Year 1, Year 2, and Year 3.

b. Prepare an income statement for Year 1, Year 2, and Year 3. Options for income statement blanks:

• Advertising
• Beginning merchandise inventory
• Commissions
• Depreciation
• Ending merchandise inventory
• Fixed manufacturing overhead
• Fixed selling and administrative
• Indirect labor
• Indirect materials
• Purchases
• Sales
• Variable cost of goods sold
• Variable selling and administrative

2. Assume the company uses variable costing and a LIFO inventory flow assumption (LIFO means last-in first-out. In other words, it assumes that the newest units in inventory are sold first):

a. Compute the unit product cost for Year 1, Year 2, and Year 3.

b. Prepare an income statement for Year 1, Year 2, and Year 3.

3. Assume the company uses absorption costing and a FIFO inventory flow assumption (FIFO means first-in first-out. In other words, it assumes that the oldest units in inventory are sold first):

a. Compute the unit product cost for Year 1, Year 2, and Year 3.

b. Prepare an income statement for Year 1, Year 2, and Year 3.

4. Assume the company uses absorption costing and a LIFO inventory flow assumption (LIFO means last-in first-out. In other words, it assumes that the newest units in inventory are sold first):

a. Compute the unit product cost for Year 1, Year 2, and Year 3.

b. Prepare an income statement for Year 1, Year 2, and Year 3.