Cullumber Inc. uses the average cost formula in a perpetual inventory system. (Use unrounded numbers in your calculations but round to the nearest cent for presentation purposes in your answer.) Jun 1 Beginning inventory Purchase Jun 5 Jun 8 Sale 45 units @ $19 per unit 80 units @ $22 per unit 70 units 80 units @ 22.54 per unit 25 units Jun 9 Purchase Jun 10 Sale Jun 22 Sale 40 units Cullumber Inc. has an ending inventory on June 30 of $1531.60. $1441.60. $1508.65. $1577.80