Use the information below to calculate the dollar amount of Cost of Goods Sold for the 40 units sold on September 10th using the Weighted Average method of valuing inventory. (Round per unit average and total cost to the nearest cent.) Date Transaction Description Units Cost per Unit Total Cost September 1 Beginning Inventory 200 $5 per unit $1,000 September 5 Purchased 30 $6 per unit $180 September 10 Sold 40.