FIFO and LIFO accounting?

jeffersons copy center uses laser printers. assume jefferson started the year with 92 containers of ink (average cost of 9.00$ each, FIFO cost of 8.90$ each, LIFO, cost of 8.05$ each). during the year, jefferson purchased 680 containers of ink at 9.80$ and sold 580 units for 20.25$ each. jefferson paid operating... show more jeffersons copy center uses laser printers. assume jefferson started the year with 92 containers of ink (average cost of 9.00$ each, FIFO cost of 8.90$ each, LIFO, cost of 8.05$ each). during the year, jefferson purchased 680 containers of ink at 9.80$ and sold 580 units for 20.25$ each. jefferson paid operating expenses throughout the year, a total of 3,750$. jefferson is not subject to income tax.

i need to calculate J's net income for the current year ended december 31, under the average, fifo and lifo inventory costing methods

answer should be like:
net income:___________
fifo:_______________
lifo:______________
average:____________

thank you very much in advance and if you have any helpful sites, it could be helpful together with how you got the answers!
thanks in advance
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