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: Date Transaction Number of Units Per Unit Total Jan. 1 Inventory 9,000 $60.00 $540,000 Jan. 10 Purchase 21,000 70.00 1,470,000 Jan. 28 Sale 10,250 140.00 1,435,000 Jan. 30 Sale 5,750 140.00 805,000 Feb. 5 Sale! 3,500 140.00 490,000 Feb. 10 Purchase 39,500 75.00 2,962,500 Feb. 16 Sale 15,000 150.00 2,250,000 Feb. 28 Sale 10,000 150.00 1,500,000 Mar. S Purchase 25,000 82.00 2,050,000 Mar. 14 Sale 30,000 150.00 4,500,000 Mar. 25 Purchase 10,000 88.40 884,000 Mar. 30 Sale 19,000 150.00 2,850,000