What is the eventual effect on real gdp if the government increases its purchases of goods and services by $75,000? assume the marginal propensity to consume (mpc) is 0.75. $ −225000 what is the eventual effect on real gdp if the government, instead of changing its spending, increases transfers by $75,000? assume the mpc has not changed. $ 225000 an increase in government transfers or taxes, as opposed to an increase in government purchases of goods and services, will result in