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If a firm increases production,then its:


A) variable costs rise.
B) fixed costs stay the same.
C) total costs increase.
D) All of these are true.

E) A) and D)
F) B) and C)

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Total cost includes:


A) one-time expenses and ongoing expenses.
B) forgone opportunity costs.
C) the amount the firm spends on all inputs that go into the production of a good or service.
D) All of these are true.

E) A) and C)
F) A) and D)

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In business,the "bottom line" refers to the very last line of a(n) :


A) income statement,which shows profit.
B) balance sheet,which shows profit.
C) income statement,which shows total revenue.
D) balance sheet,which shows total income.

E) C) and D)
F) A) and D)

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Returns that occur in the long run when average total cost does not depend on the quantity of output are called:


A) economies of scale.
B) diseconomies of scale.
C) constant returns to scale.
D) minimum average total cost.

E) A) and B)
F) B) and C)

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The amount that a firm receives from the sale of goods and services is called:


A) total revenue.
B) total cost.
C) profit.
D) net profit.

E) A) and D)
F) B) and D)

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Average total cost:


A) is the sum of average fixed costs and average variable costs.
B) is total cost divided by total output.
C) is minimized when it equals marginal cost.
D) All of these are true.

E) All of the above
F) A) and C)

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Marginal cost is:


A) the additional cost a firm will incur by producing one additional unit of output.
B) the additional output a firm will get by employing one additional unit of input.
C) the total cost a firm will incur by producing a given level of output.
D) the costs that sit on the margin,that do not change regardless of the level of output.

E) A) and D)
F) None of the above

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When accounting profits are zero,which of the following is most likely to be true?


A) Economic profits are negative.
B) Economic profits could be zero.
C) Economic profits could be positive.
D) All of these are likely.

E) None of the above
F) A) and D)

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Suppose Larry's Lariats produces lassos in a factory,and uses nine feet of rope to make each lasso.The rope is put into a machine that automatically cuts it to the right length,then seals the ends to prevent fraying.The rope is then hand tied,dipped,and wound before being placed in a packaging machine to prepare it for retail sale.Which of the following would be considered a variable cost for this company?


A) The cost of the factory
B) Employee wages
C) The rope-cutting machine
D) All of these expenses would be included in variable costs.

E) B) and D)
F) A) and D)

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Suppose Chip's Chips produces bags of potato chips that sell for $3 a bag.What was the total revenue for Chip's Chips?


A) Cannot answer this question without knowing the cost per bag.
B) Cannot answer this question without knowing the quantity of bags sold.
C) Cannot answer this question without knowing the cost per bag and the quantity of bags sold.
D) Cannot answer this question without knowing what market share they hold.

E) C) and D)
F) B) and C)

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Average variable costs:


A) always trend upward as output increases.
B) always trend downward as output increases.
C) decrease,then increase as output increases.
D) increase,then decrease as output increases.

E) All of the above
F) A) and C)

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If a firm stops production,then its:


A) variable costs decrease to zero.
B) fixed costs stay the same.
C) total costs decrease.
D) All of these are true.

E) All of the above
F) B) and D)

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When economic profits are negative,accounting profits could be:


A) positive.
B) negative.
C) zero.
D) All of these are possible.

E) C) and D)
F) None of the above

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A firm currently employs four workers in a sandwich shop,and produces sandwiches as a total cost per sandwich (ATC) of $3.The sandwiches sell for $5.If the marginal cost of hiring another worker to produce sandwiches is $5.50 per sandwich,then:


A) it will cost $5.50 to make another sandwich,which can only be sold for $5.
B) the firm will lose $0.50 per sandwich if it hires another worker.
C) the firm should not hire a fifth worker.
D) All of these are true.

E) None of the above
F) All of the above

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Suppose Winston's annual salary as an accountant is $60,000,and his financial assets generate $4,000 per year in interest.One day,after deciding to be his own boss,he quits his job and uses his financial assets to establish a consulting business,which he runs out of his home.To run the business,he outlays $8,000 in cash to cover all the costs involved with running the business,and earns revenues of $150,000.What are Winston's explicit costs?


A) $64,000
B) $72,000
C) $8,000
D) $12,000

E) A) and B)
F) All of the above

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Mike wants to open his own repair shop,and is considering using his savings of $30,000 to get it started.He is currently earning 3 percent interest on his savings.His friend Bob calls him and asks to borrow $30,000 to start up a bagel shop;Bob offers to pay him 5 percent interest if he loans him the money.If Mike were to use the money to open his own repair shop,how can he accurately account for his costs?


A) Mike must consider the $900 in forgone interest on his savings as an implicit cost.
B) Mike must consider the $1,500 in forgone interest from loaning the money to Bob as an implicit cost.
C) Mike must consider the $900 in forgone interest on his savings as an explicit cost.
D) Mike must consider the $1,500 in forgone interest from loaning the money to Bob as an explicit cost.

E) C) and D)
F) B) and D)

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Suppose Larry's Lariats produces lassos in a factory,and uses nine feet of rope to make each lasso.The rope is put into a machine that automatically cuts it to the right length,then seals the ends to prevent fraying.The rope is then hand tied,dipped,and wound before being placed in a packaging machine to prepare it for retail sale.If Larry were to decrease the production of lassos,which of the following is true regarding the company's costs?


A) The variable costs of rope would drop to zero.
B) The fixed cost of the rope cutting machine would stay the same.
C) The fixed cost of the employee's wages would stay the same.
D) None of these is true.

E) A) and D)
F) C) and D)

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Which of the following would be considered a one-time expense?


A) A delivery truck
B) Raw materials
C) Radio ads
D) A manager's salary

E) None of the above
F) All of the above

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In general,the cost of an input:


A) stays the same when you've reached the point of diminishing marginal product in your firm.
B) decreases when you've reached the point of diminishing marginal product in your firm.
C) increases when you've reached the point of diminishing marginal product in your firm.
D) is minimized when you've reached the point of diminishing marginal product in your firm.

E) A) and B)
F) C) and D)

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In general,economic profits are:


A) greater than accounting profits.
B) less than accounting profits.
C) the same as accounting profits.
D) not comparable to accounting profits.

E) A) and B)
F) A) and C)

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