Inventory Help

I need to calculate the following

TomorrowsTomorrows

Electronic Center began

DecemberDecember

with

100100

units of merchandise inventory that cost

$ 70$70

each. During

DecemberDecember,

the store made the following purchases:

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(Click the icon to view the purchases.)

TomorrowsTomorrows

uses the periodic inventory system, and the physical count at

DecemberDecember

31 indicates that

130130

units of merchandise inventory are on hand.

Read the requirements

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Dec.

3

35

units @

$82

each

12

45

units @

$84

each

18

75

units @

$90

each

.I need the Cost of Goods Sold and Ending Inventory in FIFO, LIFO and Weighted Average Inventory. Please specify which is which.