A printer is printing photos. For every 12 photos, the printer takes 4 minutes. Complete the table below showing the number of photos and the time it takes to print them.
Number of photos
12
21
30
X
Time (minutes)
4
6
9

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.)