Marquis Company uses a weighted-average perpetual inventory system and has the following purchases and sales: August 2 August 18 August 29 13 units were purchased at $4 per unit. 18 units were purchased at $6 per unit. 15 units were sold. What is the amount of the cost of goods sold for this sale? (Round average cost per unit to 2 decimal places.) Multiple Choice $64.00 $108.00 O $160.00 O O $77.40 $66.50