Need help, been stuck on this for a hour.

Martinez Corp. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Martinez Corp.'s purchases of EZslide snowboards during September. During the same month,98EZslide snowboards were sold. Martinez Corp. uses a periodic inventory system.

Date

Explanation

Units

Unit Cost

Total Cost

Sept. 1

Inventory

13

$101

$1,313

Sept. 12

Purchases

46

104

4,784

Sept. 19

Purchases

51

105

5,355

Sept. 26

Purchases

21

106

2,226

Totals

131

$13,678

(a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods.(Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to 0 decimal places, e.g. 125.)

FIFO

LIFO

AVERAGE-COST

The ending inventory at September 30

$Enter a dollar amount

$Enter a dollar amount

$Enter a dollar amount

(b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods.(Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to 0 decimal places, e.g. 125.)

FIFO

LIFO

AVERAGE-COST

Cost of goods sold

$Enter a dollar amount

$Enter a dollar amount

$Enter a dollar amount