The inventory records for Radford Company reflect the following:

# of units Cost/unit

Beginning inventory, May 1 100 units $4.00

First purchase, May 7 300 units $4.40

Second purchase, May 17 500 units $4.60

Third purchase, May 23 175 units $4.80

During May, the company sold 900 units at a selling price of $7.80 per unit

Based on the preceding information, determine the following:

1. Number of total units available for sale during May

1. Total dollar amount of Cost of Goods Available for Sale

1. Number of units remaining in inventory on May 31

1. Weighted average cost per unit for May; Cost of Goods sold for May using the Weighted Average Cost method

1. Cost of Goods Sold for May using the LIFO method

1. Ending inventory value at the end of May using the FIFO method

1. Total sales revenue for the month of May
2. Gross Margin (Profit) for the month of May using the Weighted Average and the LIFO methods.