DiPaolo's invenory, purchases, and sales for March and April follow. The company closes its books at the end of each month. It uses the periodic inventory system.

Mar. 1 Beginning inventory 60 units at $49

10 Purchase 100 units at $52

19 Sale 90 units

31 Ending inventory 70 units

Apr. 4 Purchase 120 units at $53

15 Purchase 50 units at $54

23 Sale 200 units

25 Purchase 100 units at $55

30 Ending inventory 140 units

1. Compute the costs of the inventory on March 31 and April 30 using the average -cost method. In addition, determine cost of goods sold for March and April. (Round to the nearest cent.)
2. Compare the cost of the ending inventory on March 31 and April 30 using the FIFO method. Also detrmine cost of goods sold for March and April.
3. Compute the cost of the ending inventory on March 31 and April 30 using the LIFO method. Also determine cost of goods sold for March and April.
4. Do the cash flows from operations for March and April differ depending on which inventory costing method is used- average cost, FIFO or LIFO? Explain.