The following are data available for Blue Grass for the month of June:

Sales 1200 units

beginning inventory 30 units @ $2.00

Purchases, in chronological order 600 units @ $2.10

400 units @ $2.20

500 units @ $2.30

Calculate cost of goods sold and ending inventory under the following cost flow assumptions:

(1.) Weighted average

(2.) FIFO

(3.) LIFO