Suppose it takes 1 unit of labour to produce 2 units of electronics (say, X) in Argentina and it takes 1 unit of labour to produce 8 units of cereals (say, Y) in Argentina. In Brazil it takes 1 unit of labour to produce 4 units of electronics (or X) and 1 unit of labour to produce 4 units of cereals (or Y). Argentina has 400 units of labour, Brazil has 300.

(a) Draw the autarky PPFs for Argentina and Brazil (use Y for Y axis, X for X axis).

(b) Draw the world supply curve for electronics (X) and for cereals (Y)