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Mar. 1 25 units The units of Manganese Plus available for sale during the year were as follows: Inventory $30 $750 June 16 Purchase 27 units $30 810 Nov. 28 Purchase 38 units $35 1,330 90 units $2,890 There are 18 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