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sumption increases by $12 billion when real disposable income increases by $15 billion, what is the value of the MPC (marginal propensity to consume)?...
If consumption increases by $12 billion when real disposable income increases by $15 billion, what is the value of the MPC (marginal propensity to consume)? What is the relationship between the MPC and the MPS (marginal propensity to save)? If the MPC increases, what must happen to the MPS?