At any point along an economy's production possibility boundary (PPB), it is always true that:
allocative efficiency is achieved.
there is an equal distribution of wealth and income.
it is impossible to produce more of one good without reducing the output of another.
the economy is operating with unemployed resources.
123 exam-style questions on AQA A Level Economics 1.1 Economic methodology and the economic problem, covering 1.1.1 Economic methodology, 1.1.2 The nature and purpose of economic activity, 1.1.3 Economic resources, 1.1.4 Scarcity, choice and the allocation of resources, and 1.1.5 Production possibility diagrams. Each one has a worked solution and a mark scheme showing where the marks go.