Current Attempt in Progress Sunland Company uses a perpetual inventory system and reports the following for the month of June: (a1) Your answer is correct. Calculate the weighted-average cost per unit, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $7 and a sale of 50 units on June 27 for $8. (Round intermediate calculations to 0 decimal ploces, eg. 152 and final answers to 3 decimal places, e.g. 5.125.) June 1 June 12 June 15$ June 23 June 27 Calculate the cost of the ending inventory and the cost of goods sold for each cost flow assumption, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $7 and a sale of 50 units on June 27 for $8. (Round answers to 0 decimal places, es. 125.)