help with Part b or the last photo. I have completed the other steps. I need help , please include in detail how you solved part B .

Windsor Company's record of transactions concerning part X for the month of April was as follows. Calculate the weighted-average cost per unit. (Round answer to 4 decimal places, e.g. 2.7682.) Weighted-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.) 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 imventory under (1) FIFO, (2) LIFO and (3) Average-cost? (Round averoge cost per unit to 4 decimal places, e.s. 2.7621 and final answers to 0 decimal places, e.g. 6.548.)