Perpetual System-Calculating Ending Inventory and Cost of Sales Using Moving Average, FIFO, and LIFO April Inc. maintains a perpetual inventory system and recorded the following information for the month of January. 1) Moving average method Note: Enter the answers for unit cost in dollars and cents, rounded to the nearest penny. Use the rounded amounts for later calculations. Note: Do not use negative signs with any of your answers. -Note: Do not use negative signs with any of your answers. -Note: On each date, list the inventory units in chronological order based on their purchase date with beginning inventory, if any, listed first. - Note: Do not use negative signs with any of your answers. - Note: On each date, list the inventory units in chronological order based on their purchase date with beginning inventory, if any, listed first