Company's record of transactions for the month of April was as follows Purchases Sales April1 (balance on hand) 780 $5.90 April 3 650 $10.00 1,950 6.00 NO 1,820 10.00 8 1,040 6.30 11 780 11.00 13 1,560 6.40 23 1,560 @ 11.00 21 910 6.50 27 1,170 a 12.00 29 650 6.70 5,980 6,890 (a1) Assuming that periodic inventory records are kept in units only, calculate the average-cost per unit. (Round answer to 2 decimal places, e.g. 2.76.) Average-cost per unit $ per unit