How do I begin my FIFO perpetual beginning balance (it consist of 3 different cost) yet when I add purchases and subtract sales it doesn't balance out. Can you provide more explanation using my data for May. Will truly appreciate it. Thanks!

P7-6 Alternative Inventory Methods Garrett Company has the following transactions during the months of April and LO 7.5 May: X Date Transaction Units Cost/Unit April 1 Balance 400 17 Purchase 200 $5.50 25 Sale 150 28 Purchase 100 5.75 May Purchase 250 5.50 18 Sale 300 22 Sale 50 The cost of the Inventory on April 1 is $5, $4, and $2 per unit, respectively, under the FIFO, average, and LIFO cost flow assumptions. Required: 1. Compute the inventories at the end of each month and the cost of goods sold for each month for the follow- ing alternatives: a. FIFO periodic b. FIFO perpetual C. LIFO periodic d. LIFO perpetual C. Weighted average (Round unit costs to 4 decimal places.) F. Moving average ( Round unit costs to 4 decimal places.) 2. Next Level Reconcile and explain the difference between the LIFO periodic and the LIFO perpetual results. 3. Next Level If Garrett uses IFRS, which of the previous alternatives would be acceptable, and why