Gross profit is $7,020
Using the average inventory cost assumption, the weighted average cost of units available for sale is multiplied by the number of units sold to produce cost of goods sold. Weighted average cost of units available for sale: {(200 × $8) + ($200 × $10) + (400 × $12)} = $8,400; $8,400 ÷ 800 units available for sale = unit price $10.50. 520 units were sold (180 + 340), so cost of goods sold is $5,460 (520 × $10.50). Sales revenue is $12,480 (520 × $24). Gross profit is $7,020 ($12,480 - $5,460).
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