题目内容

A firm is producing 20 units with an average total cost of $25 and marginal cost of $15. If it were to increase production to 21 units, which of the following must occur? ( )

A. Marginal cost would decrease.
B. Marginal cost would increase.
C. Average total cost would decrease.
D. Average total cost would increase.

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Raj opens up a lemonade stand for two hours. He spends $10 for ingredients and sells $60 worth of lemonade. In the same two hours, he could have mowed his neighbor’s lawn for $40. Raj has an accounting profit of ( ) and an economic profit of( ).

A. $50, $10
B. $90, $50
C. $10, $50
D. $50, $90

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Raj opens up a lemonade stand for two hours. He spends $20 for ingredients and sells $80 worth of lemonade. In the same two hours, he could have mowed his neighbor’s lawn for $40. Raj has an accounting profit of （） and an economic profit of（ ).

A. $60, $20
B. $100, $60
C. $20, $60
D. $60, $100

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If the consumer price index is 200 in year 1980 and 400 today, then $600 in 1980 has the same purchasing power as （）today.

A. $400
B. $600
C. $1000
D. $1200

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Suppose the demand for French bread rises. ( )

A. Both producer surplus in the market for French bread and producer surplus in the market for flour rise.
Both producer surplus in the market for French bread and producer surplus in the market for flour fall.
C. Producer surplus in the market for French bread rises but in the market for flour falls.
D. Producer surplus in the market for French bread falls but producer surplus in the market for flour rises.

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A firm is producing 20 units with an average total cost of $25 and marginal cost of $15. If it were to increase production to 21 units, which of the following must occur? ( )

A. Marginal cost would decrease. B. Marginal cost would increase. C. Average total cost would decrease. D. Average total cost would increase.

Raj opens up a lemonade stand for two hours. He spends $10 for ingredients and sells $60 worth of lemonade. In the same two hours, he could have mowed his neighbor’s lawn for $40. Raj has an accounting profit of ( ) and an economic profit of( ).

Raj opens up a lemonade stand for two hours. He spends $20 for ingredients and sells $80 worth of lemonade. In the same two hours, he could have mowed his neighbor’s lawn for $40. Raj has an accounting profit of （ ） and an economic profit of（ ).

If the consumer price index is 200 in year 1980 and 400 today, then $600 in 1980 has the same purchasing power as （ ）today.

Suppose the demand for French bread rises. ( )

A. Marginal cost would decrease.
B. Marginal cost would increase.
C. Average total cost would decrease.
D. Average total cost would increase.

Raj opens up a lemonade stand for two hours. He spends $20 for ingredients and sells $80 worth of lemonade. In the same two hours, he could have mowed his neighbor’s lawn for $40. Raj has an accounting profit of （） and an economic profit of（ ).

If the consumer price index is 200 in year 1980 and 400 today, then $600 in 1980 has the same purchasing power as （）today.