Waterway Corp sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to waterway corps purchases pf EZslide snowboards in September. During the same month, 108 EZslide snowboards were sold. Waterway Corp uses a periodic inventory system.

date	explanation	units	unit cost	total cost
9/1	inventory	10	$110	$1,100
9/12	purchases	53	113	5989
9/19	purchases	54	114	6156
9/26	purchases	23	115	2645
	totals	140		15890

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

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