Sweeps Co. (a calendar year end business) uses a periodic inventory system. Its records show the following for the month of August, in which 400 units were sold for a total of $3,500 cash: Date Number of units Cost per unit Total cost August 1 Inventory, beginning 300 $5.20 $1,560 August 15 Purchase 200 $5.25 $1,050 August 24 Purchase 100 $5.28 $528 Total 600 $3,138 Sweeps Co. uses an average cost inventory costing method to compute cost of goods sold and value ending inventory. Compute gross profit under the average cost inventory costing method for the month of August for Sweeps Co