微观经济学问题1、Prospective sunk costsA) are relevant to economic d
微观经济学问题
1、Prospective sunk costs
A) are relevant to economic decision-making.
B) are considered as investment decisions.
为什么选A而不是B
2、In1985,Alice paid $20,000 for an option to purchase ten acres of land.By payingthe $20,000,she bought the right to buy the land for $100,000 in 1992.Whenshe acquired the option in 1985,the land was worth $120,000.In 1992,it isworth $110,000.Should Alice exercise the option and pay $100,000 for the land?
这题怎么理解
3、 FarmerJones bought his farm for $75,000 in 1975.Today the farm is worth $500,000,and the interest rate is 10 percent.ABC Corporation has offered to buy thefarm today for $500,000 and XYZ corporation has offered to buy the farm for$530,000 one year from now.Farmer Jones could earn net profit of $15,000 (overand above all of his expenses) if he farms the land this year.What should hedo?
那个interest rate用什么用呢~