Metlock Company uses a periodic inventory system. For April, when the company sold 650 units, the following information is available. Units Unit Cost Total Cost 310 $20 $ 6,200 April 1 inventory April 15 purchase April 23 purchase 390 24 9,360 300 26 7,800 1,000 $23,360 (a) Your answer is incorrect Calculate weighted average cost per unit. (Round answer to 2 decimal places, e.g. 2.76.) Weighted average cost per unit $