The determination of the gross profit for April and the ending Inventory on April 30 is as follows:
                        Gross Profit        Ending Inventory
(a) First-in, First-out (FIFO) Â Â $200 ($300 - $100) Â $260 ($120 + $140)
(b) Last-in, First-out (LIFO) Â Â $160 ($300 - $140) Â $220 ($120 + $100)
(c) Weighted Average cost  $180 ($300 - $120)  $240 ($120 x 2)
The cost flow methods are FIFO, LIFO, Specific Identification, and Weighted-Average Cost methods of costing ending inventory and cost of goods sold based on assumptions.
The following three identical units of Item P401C are purchased during April:
Cost information:
Item  Units  Cost
April 2 Purchase  1 $100
15 Purchase  1  120
20 Purchase  1  140
Total  3     $360
Average cost per unit = $120 ($360 ÷ 3)
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