You are provided with the following information for Najera Inc. for the month ended June 30, 2017. Najera uses the periodic method for inventory. Date June Beginning inventory June 4 Purchase une 10 Sale June 11 Sale return une 18 Purchase une 18 Purchase return June 25 Sale une 28 Purchase Unit Cost or Selling Price $39 43 72 72 45 45 Quantity 39 137 112 16 58 63 31 49 Calculate cost per unit. (Round answer to 2 decimal places, e.g. 5.25.) Weighted-average cost per unit s