Total period costs = $13,000 = ($8,000 + 1,000 + 3,000 + 1,000)
Raw Material used = $8,000 = $(2,000 + 10,000 − 4,000)
Cost of goods manufactured = $80,000 =
(25,000 + 8,000 + 40,000 + 15,000 + 4,000 + 4,000 + 2,000 − 18,000)
Product cost per unit = $8.00 per unit = ($80,000/10,000 units)
Cost of goods sold = $72,000 = (9,000 units sold $8.00)