公斤的马铃薯.ppt

曾雅妮應該自己修剪草坪嗎？ 假設曾雅妮能在2小時之內割完草坪；但同樣的時間，她也可以工作賺錢，例如幫耐吉(Nike)拍廣告而獲得10,000美元。 阿甘恰好住在雅妮隔壁，目前在麥當勞工作每小時賺20美元，但以他的割草技術則需要花上4小時才能完成草坪的工作。他們兩人有可能交易嗎？亦即阿甘會接受曾雅妮的雇用嗎？ 曾雅妮有沒有比較利益商品？ 阿甘呢？ * 比較利益的應用 機會成本 割草坪 工作 曾雅妮 阿甘 10,000美元 80美元 花2小時割草 花4小時割草 課本p.44 因此，曾雅妮應該選擇工作拍廣告(比較利益商品)。 然後雇用阿甘來割草，只要曾雅妮願意付給阿甘的錢多於80美元，則雙方都可以變得更好。 * * * * * * In this diagram, the green arrows represent flows of income/payments. The red arrows represent flows of goods services (including services of the factors of production in the lower half of the diagram). To keep the graph simple, we have omitted the government, financial system, and foreign sector, as discussed on the next slide. You may wish to change the order in which the elements appear. To do so, look for “Custom Animation” in your version of PowerPoint. * In this diagram, the green arrows represent flows of income/payments. The red arrows represent flows of goods services (including services of the factors of production in the lower half of the diagram). To keep the graph simple, we have omitted the government, financial system, and foreign sector, as discussed on the next slide. You may wish to change the order in which the elements appear. To do so, look for “Custom Animation” in your version of PowerPoint. * In this diagram, the green arrows represent flows of income/payments. The red arrows represent flows of goods services (including services of the factors of production in the lower half of the diagram). To keep the graph simple, we have omitted the government, financial system, and foreign sector, as discussed on the next slide. You may wish to change the order in which the elements appear. To do so, look for “Custom Animation” in your version of PowerPoint. * In this diagram, the green arrows represent flows of income/payments. The red arrows represent flows of goods services (including services of the factors of production in the lower half of the diagram). To keep the graph simple, we have omitted the