Country A has 3500 units of labor and can produce two goods, manufactures and food. A’s producers take 7 units of labor to produce one unit of manufactures and 2 units to produce one food unit. Country B has 4500 units of labor and takes 5 units of labor to produce one unit of manufactures and 10 units to produce one unit of food. At what price of food in terms of manufactures would A and B respectively supply food? Would trade take place in between A and B in Adam Smith’s world? How many food units could B supply?