What is the answer to this? I do not understand how you get the answer

c. Desired inventories at July 31: Direct materials: Grates Stainless steel Burner subassemblies Shelves Finished products: Backyard Chef Master Chef d. Direct materials used in production: In manufacture of Backyard Chef: Grates Stainless steel Burner subassemblies Shelves In manufacture of Master Chef: Grates Stainless steel Burner subassemblies Shelves e. Anticipated purchase price for direct materials: 340 units 1,800 lbs. 155 units 315 units 40 units 22 units 3 units per unit of product 24 lbs. per unit of product 2 units per unit of product 4 units per unit of product 6 units per unit of product 42 lbs. per unit of product 4 units per unit of product 5 units per unit of product