how am I getting this wrong?

Sheffield Company's record of transactions for the month of April was as follows. Purchases (balance on hand) April 1 $6.00 6.08 April 3 9 4 8 6.40 11 1,260 @ 3.150 @ 1,680 2.520 @ 1.470 @ 1.050 @ Sales 1,050 @ $10.00 2,940 @ 10.00 1.260 @ 11.00 2.520 @ 11.00 1.890 12.00 9.660 13 6.50 6.60 23 27 21 29 6.79 11.130 (21) Your answer is correct 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.) 6.35 per unit Average-cost per unit Assuming that periodic inventory records are kept in units only.compute the inventory at April 30 using LIFO and average-cost. (Round answer to 0 decimal places, eg. 2,760.) LIFO Average-cost 61