Calculator The units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory 22 units @ $30 $660 June 16 Purchase 30 units @ $34 1,020 Nov. 28 Purchase 46 units @ $35 1,610 98 units $3,290 There are 15 units of the product in the physical inventory at November 30. The periodic inventory system is used. Determine the difference in gross profit between the LIFO and FIFO inventory cost systems. Enter the answer as a positive number FIFO Cost of Goods Sold LIFO Cost of Goods Sold Difference