In an open economy, a government injection of £8 billion results in a total increase in national income of £20 billion. If the marginal propensity to save (MPSMPSMPS) is 0.22 and the marginal rate of taxation (MRTMRTMRT) is 0.11, what is the marginal propensity to import (MPMMPMMPM)?
0.070.070.07
0.270.270.27
0.670.670.67
0.730.730.73
22 exam-style questions on OCR A Level Economics The multiplier and the accelerator. Each one has a worked solution and a mark scheme showing where the marks go.