Skysong sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to

Skysong's purchases of EZslide snowboards during September. During the same month, $105$ EZslide snowboards were

sold. Skysong uses a periodic inventory system.

Compute the ending inventory at September $30$ using the FIFO, LIFO and average$-$cost methods.

FIFO

Ending inventory at

September $30$

LIFO

$

AVERAGE$-$COST

$

Compute the cost of goods sold at September $30$ using the FIFO, LIFO and average$-$cost methods.