=+The beginning inventory of merchandise at Waldo Co. and data on purchases and sales for a three-month period are as follows:

Number Per Date Transaction of Units Unit Total March 3 Inventory 60 $1,500 $ 90,000 8 Purchase 120 1,800 216,000 11 Sale 80 5,000 400,000 30 Sale 50 5,000 250,000 April 8 Purchase 100 2,000 200,000 10 Sale 60 5,000 300,000 19 Sale 30 5,000 150,000 28 Purchase 100 2,200 220,000 May 5 Sale 60 5,250 315,000 16 Sale 80 5,250 420,000 21 Purchase 180 2,400 432,000 28 Sale 90 5,250 472,500