Inventory Costing Methods-Periodic Method Arrow Company is a retailer that
uses the periodic inventory system. On August 1, it had 80 units of product
\(\mathrm{A}\) at a total cost of \(\$ 1,600\). On August 5 , Arrow purchased 100
units of \(A\) for \(\$ 2,116\). On August 8 , it purchased 200 units of \(A\) for
\(\$ 4,416\). On August 11, it sold 170 units of A for \(\$ 4,800\). Calculate the
August cost of goods sold and the ending inventory at August 31 using (a)
first-in, first-out, (b) last-in, first-out, and (c) the weighted-average cost
methods. Round your final answers to the nearest dollar.