please explain

FIQUES POLII U1 we lost IS WU a tolal 01 JU Pons. 1.-15 points) All-Pages Book Company reports the following inventory transactions during the current month. All-Pages uses the perpetual method for inventory. Total Number of Units Unit Cost Event Cost $12 Date Dec. 1 8th 13th 15th Beg. Inventory Purchase Purchase $4.800 7,000 6,000 15 24th 28th 16 400 1.000 200 500 550 Purchase Purchase Sale 3,200 10,000 20 Dec.30th Required: Calculate the Cost of Goods Sold using the Weighted Average, FIFO, and LIFO inventory costing methods. Fill in the following table with DOLLAR AMOUNTS SS: LIFO Weighted Ave. Cost Cost of Goods Sold Show work below