Date 01/01/21 Description Inventory Units Cost Per Unit 51 $429 01/30/21 Purchase 38 $452 02/27/21 Purchase 59 $471 05/03/21 Purchase 46 $498 2021 Sales 123 01/25/22 Purchase 43 $517 02/26/22 Purchase 68 $546 04/30/22 Purchase 55 $591 2022 Sales 139 Parkhill uses a periodic inventory system to account for its inventory transactions. The company prepares financial statements just once a year, at its December 31 year-end. None of the company's inventory was stolen or damaged during these two years.