Wildhorse Company's record of transactions concerning part WA6 for the month of September was as follows. Calculate average-cost per unit. Assume that perpetual inventory records are kept in units only. (Round answer to 2 decimal places, e.g. 2.76.) Average-cost per unit \$ Compute the inventory at September 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 average cost per unit to 2 decimal places, e.g. 2.76 and final answers to 0 decimal places, e.g. 6,548.)