You have the following information for Waterway Inc. for the month ended June 30, 2022. Waterway uses a periodic inventory system. Calculate cost per unit. (Round answer to 2 decimal places, ey. 5.25.) Weighted-average cost per unit Calculate gross profit rate under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost. (Round answers to 1 decimal place, e.g. 51.2\%.) eTextbook and Media Your answer is correct. Compare results for the three cost flow assumptions and answer the following questions. In this period of rising prices, gives the highest cost of goods sold and the gross profit. gives the lowest cost of goods sold and the gross profit