Elevator 1 moved up 12 feet from the ground level. It’s position is labeled as +12. Elevator 2 moved down 7 feet from the ground level. It’s position is labeled as .(use the hyphen for negative such as -1)

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)