please show work

3 7. A company using the perpetual inventory method reported the following changes in inventory during June: June 1 June 14 June 24 Balance Purchased Purchased 1,400 units @ $2 800 units @ $3 700 units @ $4 June 8 Sold June 10 Sold June 29 Sold 400 units @ $15 1,000 units @ $16 600 units @ $17 Determine the ending inventory balance under the following methods. (Please show your calculations.) (a) FIFO (5 points) (b) LIFO (5 points) (c) Weighted average cost (moving average) (5 points)