Giles manufacturing uses a periodic inventory system ash has the following transaction for the month of June 2015 date transactions units costperunit totalcost June 1 begin inventory 17 $240. $4080 June 7 sale. 12 June 12. purchase. 13. 230. 2990 June 15. Sale. 11. June 24. purchase. 14. 220. 3080 June 27. sale. 15. June 29. purchase. 8. 210. 1680 11830 using LIFO calculate ending inventory and cost of goods sold at June 40 2015 using weighted-average cost calculate ending inventory and cost of goods sold at June 30 2015