1- if 30 units were sold in may and 60 units were sold in august , how much is the ending inventory at the end of december ? (using the fifo perpertual method )

2- if the avergae-cost periodic method is adopted , how much is the ending inventroy at the end of decenber ?

3- if you were the tax manager , which method will you suggest between fifo perpetual and average-cost periodic ?

A company purchased merchandise to be resold at increasing costs during the year 2015. The purchases were made at the following costs