I cannot figure this problem out please help

Waterway Company's record of transactions concerning part X for the month of April was as follows. Purchases Sales (balance April 1 on 380 @ $6.90 April 5 580 hand ) 4 680 @ 7.00 12 480 11 580 @ 7.30 27 1,360 18 480 @ 7.40 28 150 26 880 @ 30 480 @ 8.00 Calculate average-cost per unit. Assume that perpetual inventory records are kept in units only. ( Round answer to 4 decimal places, e.g. 2.7682.) Average-cost per unit Compute the inventory at April 30 on each of the following bases. Assume that perpetual inventory records are kept in units only. (1) First-in, first-out (FIFO). (2) Last-in, first-out (LIFO). (3) Average-cost. (Round final answers to 0 decimal places, e.g. 6,548.) (1) (2) (3) FIFO LIFO Average-cost Ending Inventory If the perpetual inventory record is kept in dollars, and costs are computed at the time of each withdrawal, what amount would be shown as ending inventory under (1) FIFO, (2) LIFO and (3) Average-cost? (Round average cost per unit to 4 decimal places, e.g. 2.7621 and final answers to 0 decimal places, e.g. 6,548.) (1) (2) (3) FIFO LIFO Average-cost Ending Inventory $ $ Click if you would like to Show Work for this question: Open Show Work