Answer: a). Spain
b). none
c). 2.4
Explanation: a). Absolute advantage occurs when a country produces more of a good than the other country. In this case, Spain produces 50 units of Tractors while, Bolivia produces only 30 units of Tractors. Thus, Since Spain is producing more it has an absolute advantage in Tractors.
b). Both the countries are producing equal units of Cotton. Thus, we can say that none of them has an absolute advantage in cotton production.
c. Opportunity cost is the cost of the lost alternative. When Spain produces Tractors it is sacrificing production of Cotton. So, opportunity cost on 1 unit of Tractor will be,

Thus, 2.4 units of cotton which is given up is the opportunity cost of Spain for producing 1 unit of Tractor.
Answer:
Total general and administrative expenses $
Administrative salaries 1,250
Rent on administrative building 30,000
Miscellaneous administrative expenses 5,000
Total general and administrative equipment 35,250
Explanation:
The total general and administrative expenses include administrative salaries, rent on administrative building and miscellaneous administrative expenses.
Answer:
C
Explanation:
Trade off can be expressed in terms of opportunity cost.
Opportunity cost or implicit is the cost of the option forgone when one alternative is chosen over other alternatives.
Kyoko has limited time so she has to choose between three activities. If she chooses one sport, she would not be able to partake in the other activities. So, she is trading off biking or running for swimming.
Trade off occurs because resources are limited and wants are unlimited.
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A. More education can help increase life expectancy. :)