beginning inventory purchases and sales data for portable games players are as follows Apr.1 inventory 77 units @80 10 sales 53 units 15 purchases 99 units 80 20 sales 57 units 30 purchases 22 units 88 The business maintains a perpetual inventory system costing by the last in first out method. Determine the cost of merchandise sold for each sale and the inventory balance after each sale presenting the data in the form illustrated in exhibit 4. under LIFO if units are in inventory at two different costs enter the units with the Higher unit cost first in the cost of merchandise sold unit cost column and lower unit cost first in the inventory unit cost column.