how to get the average cost per unit ?

During the year, TRC Corporation has the following inventory transactions. For the entire year, the company sells 450 units of inventory for $70 each. Exercise 6-4A Part 3 3. Using weighted-average cost, calculate ending inventory, cost of goods sold, sales revenue, and gross profit. (Round "Average Co per unit" to 2 decimal places and all other answers to the neorest whole number.)