Sunland Company uses a perpetual in wentory system and reports the following for the month of June. (a1) Calculate the weighted-average cost per unit, using a perpotual inventory system. Assume a sale of 400 units occurndd on June 15 for a selling price of $7 and a sale of 50 units on June 27 for $8, (Round intermediote colculations to 0 decima/ ploces, es 152 and findt anwers to 3 decimal places, es. 5.125 . June 1 S June 12