Wholesale Lumber, Ltd. is a firm that distributes lumber to building supply and home improvement retail stores.

Wholesale Lumber, Ltd. is a firm that distributes lumber to building supply and home improvement retail stores. The firm’s cost of sales for the most recent year was $45 million, its beginning inventory was $16 million, and its ending inventory was $18 million. Estimate Wholesale Lumber’s purchase-amount of lumber materials for the year.