15) A company made the following merchandise purchases and sales during the month of May May 1 purchased 380 May 5 purchased 270 May 10 sold May 20 purchased 300 May 25 sold units at units at units at units at units at $15 each $17 each $50 each S22 each S50 each 400 400 There was no beginning inventory. If the company uses the weighted average periodic method, wha would be the cost of goods sold for May