The units of Manganese Plus available for sale during the year were as follows: Mar. 1 Inventory 22 units @ $32 $704 June 16 Purchase 30 units @ $32 960 Nov. 28 Purchase 38 units @ $36 1,368 90 units $3,032 There are 10 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