The popcorn company exhibit economies of scale because average total cost is falling as output rises.
The first step is to determine the average cost when output is 90 and 120 canisters.
Average cost = total cost / total output
average cost when output is 90 = $1050 / 90 = $11.7
average cost when output is 120 = $1200 / 120 = $10
Average cost reduced when output increases from 90 to 120. This is known as economies of scale. A firm experiences economies of scale when as output increases, average total cost reduces.
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