Saddlery Company sells leather saddles and equipment for horse enthusiasts. Saddlery uses the perpetual inventory system. The following schedule relates to the company's inventory for the month of May: Cost Sales May 1 Beginning inventory 120 units $72,000 5 Sale 80 units $62.400 6 Purchase 40 units. $26.400 228 13 Purchase 160 units $115,200 24 Sale 160 units $134,400 27 Sale 40 units $38,400 30 Purchase 60 units $47,520 (a1)