Skysong Company's record of transactions for the month of April was as follows Purchases Sales April 1 (balance on hand) 1,800 $5.60 April 3 1,500 $10.00 4,500 5.70 9 4,200 @ 10.00 2.400@ 6.00 11 1,800 @ 11.00 13 3,600 @ 6.10 23 3,600 11.00 21 2.100 6.20 27 2,700 12.00 29 1.500@ 6.40 13,800 15,900 (a1) Assuming that periodic inventory records are kept in units only, calculate the average cost per unit (Round answer to 2 decimal places, eg 2.76) Average cost per unit per unit