Periodic Inventory by Three Methods The beginning inventory at Midnight Supplies and data on purchases and sales for a three month period ending March 31. are as follows: Number of Units Date Transaction Per Unit Total 7,500 575.00 Jon Linventory 10 Purchase 20 Sale B5.00 22.500 11.250 3,750 5562,500 1,912,500 1.687.500 150.00 30 Sale 150.00 562.500 Feb. 5 Sale 235,000 1,500 54,000 150,00 12.50 10 Punch 4735.000