A firm produces 20 units of stuff using 5 units of labor The
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 $3 $20 $60 can\'t be determined from the information provided | 
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 the rational range of production begins marginal revenue exceeds marginal cost the economic profits of the firm are zero none of the above | 
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 average variable cost average total cost total variable cost none of the above | 
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 marginal revenue = average total cost marginal revenue is maximized marginal cost = average total cost none of the above | 
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 the firm is earning economic profits the firm will minimize its losses the firm cannot maximize profit none of the above | 
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 $3 $20 $60 can\'t be determined from the information provided | 
Solution
Ans) the correct option is
Ans13) the correct option is the economic profits of the firm are zero. At break even the firm has no profit and no loss
Ans14) the correct option is average total cost. Average total cost = total cost /output
Ans15) the correct option is none of the above. Profit is maximised at a point where marginal cost is equal to marginal revenue
Ans16) the correct option is the firm is earning economic profits because the marginal revenue exceeds the minimum average total cost
| can\'t be determined from the information provided. Because change in total product is not given. | 

