The units of available for sale during the year were
Mar 1 inventory 16 units $30 $480
June 16 Purchase 30 units $35 $1050
Not 28 purchase 45 units $39 $1755
91 units. $3285
There are 15 units of the product in the physical inventory at November 30. The periodic inventory system is used. Determine the both cost of good sold and ending inventory cost by a) FIFO b) lifo and c) average cost methods.