E8.11 (LO 3) (FIFO, LIFO and Average-Cost Determination) transactions for the month of April was as follows. John Adams Company's record of Purchases Sales April 1 (balance on hand) April 3 600 @ $6.00 1,500 @ 500 @ $10.00 1,400 10.00 600 11.00 1,200 11.00 900 12.00 4 6,08 9 800@ 6.40 11 1,200 @ 6.50 700 @ 6.60 13 23 21 27 29 500 @ 6.79 4,600 5,300 Instructions a. Assuming that periodic inventory records are kept in units only, compute the inventory at April 30 using (1) LIFO and (2) average-cost. b. Assuming that perpetual inventory records are kept in dollars, determine the inventory using (1) FIFO and (2) LIFO