BW Department Store expects to generate the following sales for the next three months July $460,000 August $580,000 September $620,000 Expected sales BW's cost of goods sold is 40% of sales dollars. At the end of each month, BW wants a merchandise inventory balance equal to 20% of the following month's expected cost of goods sold. The ending inventory in September is supposed to be $54,000. What dollar amount of merchandise inventory should BW plan to purchase in September