Think of a 2 country world, say the US and the UK. Each country produces two goods, say food and cloth. Suppose 7 hours of labour are required to produce one unit of either good in the UK, whereas in the US it takes 2 hours to produce one unit food and 5 hours to produce one unit of cloth. If each country has 70 million hours of labour available, draw production possibilities curves for the US, the UK and the world (Make sure the world PPF is convex outward from the origin!). Note: In PPFs, draw Food on Y axis and Cloth in X axis in order for every student to be consistent. If both countries like to consume food and cloth in equal proportions, how much each country consume each good?