Given the following data: 
Return on investment (ROI) would be:
Definitions:
Economic Loss
The difference between the revenues received from the sale of an output and the opportunity cost of the inputs used.
Average Variable Cost
The variable cost per unit of output, obtained by dividing the total variable cost by the total output.
Marginal Cost
The change in total production cost that comes from making or producing one additional unit.
Shut Down
A short-term decision by a firm to cease operations and production when the market price is below its variable costs, to minimize losses.
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