Current Attempt in Progress Crane Company uses a periodic inventory system. For April, when the company sold 400 units, the following information is available. Units Unit Cost Total Cost April 1 inventory 220 $11 $2,420 April 15 purchase 450 13 5,850 April 23 purchase 330 14 4,620 1,000 $12,890 (a1) Calculate weighted-average cost per unit. (Round answer to 2 decimal places, e.g. 2.76.) Weighted-average cost per unit