Chapter 1, Problem 9E

I want to correct answer general accounting question

How many machine hours were used during the year?

Ridgeline Plastics manufactures high-strength plastics for aerospace components. In 2021, the company produced 6,000 tons of plastic but sold 3,800 tons. In 2022, it produced the same amount but sold 7,500 tons (selling all its inventory). The selling price per ton was $1,950, variable manufacturing costs per ton were $450, and variable selling expenses were $550 per ton. Fixed manufacturing costs were $4,200,000, and fixed administrative expenses were $700,000. Compute net income under variable costing for 2021.