GlobalTech Enterprises uses a periodic inventory system. It entered into the following purchases and sales transactions for October.

Date	Activities	Units Acquired at Cost	Units Sold at Retail
Oct. 1	Beginning inventory	200 units @ $90 per unit
Oct. 3	Purchase	600 units @ $95 per unit
Oct. 10	Sales		500 units @ $140 per unit
Oct. 15	Purchase	300 units @ $100 per unit
Oct. 22	Purchase	400 units @ $105 per unit
Oct. 28	Sales		350 units @ $150 per unit

For specific identification, the October 10 sale consisted of 50 units from beginning inventory and 450 units from the October 3 purchase; the October 28 sale consisted of 200 units from the October 15 purchase and 150 units from the October 22 purchase.

Required:

1. Compute the cost assigned to ending inventory using the following methods: a. FIFO (First-In, First-Out) b. LIFO (Last-In, First-Out) c. Weighted average cost d. Specific identification (Round your average cost per unit to 2 decimal places.)
2. Calculate the gross profit for the month of October using each of the inventory costing methods.