Maple Leaf Inc. uses a periodic inventory system. It entered into the following purchases and sales transactions for May.

Date	Activities	Units Acquired at Cost	Units Sold at Retail
May 1	Beginning inventory	180 units @ $50 per unit
May 6	Purchase	400 units @ $55 per unit
May 10	Sales		420 units @ $80 per unit
May 18	Purchase	250 units @ $60 per unit
May 24	Purchase	320 units @ $65 per unit
May 28	Sales		300 units @ $90 per unit

For specific identification, the May 10 sale consisted of 100 units from beginning inventory and 320 units from the May 6 purchase; the May 28 sale consisted of 130 units from the May 18 purchase and 170 units from the May 24 purchase.

1. Compute the cost assigned to ending inventory using (a) FIFO, (b) LIFO, (c) weighted average, and (d) specific identification. (Round your average cost per unit to 2 decimal places.)