A village has five residents, each of whom has an accumulated savings of $50. Each
villager can use the money to buy a government bond that pays 10% interest per year or
to buy a year-old goat, send it onto the commons to graze, and sell it after one year. The
price of the goat that the villager will get at the end of the year depends on the amount
of weight it gains while grazing on the commons, which in turn depends on the number
of goats sent onto the commons, as shown in table below. Assume that if a villager is
indifferent between buying a bond and buying a goat, the villager will buy a goat.
What is the socially optimal number of goats to be sent out onto the commons?
A. 5
B. 4
C. 3
D. 2
Which of the following statements best expresses why economic efficiency should be
society’s first goal?
A. Efficiency gives the poor an incentive to improve their economic status.
B. Since the consensus on what is a fair distribution of goods is impossible, efficiency
is the next best goal.
C. People are not really concerned about the problems of the poor, so government must
address them instead.
D. Efficiency maximizes total economic surplus and thereby allows other goals to be
more easily achieved.