經濟學原理的問題 - 經濟

學校:

教師:

科目:經原

題目:
4. Many small boats are made of fiberglass, which is derived from petroleum.
Suppose that the price of crude oil rises.

a. Using diagrams, show what happens to the cost curves of an individual
boat-making firm and to the market
supply curve.

b. What happens to the profits of boat makers in the short run? What happens
to the number of boat makers in
the long run?

我的想法:
因為原油價格提高導致廠商的平均成本和邊際成本提高
造成廠商的短期的損失 而長期來看會有廠商選擇退出市場
所以供給線會往左移產生新的價格即是新的平均成本
所以短期來看生產者的PROFIT是小於0的
而長期來看廠商的數目會減少


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