Inventory data for Martinez Corp. are presented as follows. Assume a sale of 434 units occurred on June 15 for a selling price of $9 and a sale of 49 units on June 27 for $10 Calculate the average cost per unit, using a perpetual inventory system. (Round answers to 3 decimal places, e.g. 5.125.) June 1$ June 12$ June 15$ June 23$ June 27$ The cost of goods sold $ $ $