Please help me ex 2

Ta 2. The following table shows the automobile and rice that the China and the Vietnam can produce with one hour of time Labor productivity China Vietnam Automobile (car/hour) 4 2 Rice (ton/hour) 5 3 a. Determine which commodity the China and Vietnam has the absolute advantage, comparative advantage. b. Identify the pattern of trade and the interval that international trade ratio settles in? c. Assuming that without trade, each country has 10 hours of working in which it spends 5 hours for automobile and 5 hours for rice production; with trade, two countries agree the international trade ratio at I car = 1.5 tons of rice, draw 2 diagrams for the two countries to illustrate the gain from international trade. 3. Assume the Supply and Demand Models of Widgets for country A are as following