onsider the following macroeconomy. All amounts are in millions (m.) of $: C = 750 + 0.8 YD                                    I = 1200                                    G = 150                                    T = 250 Calculate eqm Y and prove that I=sum of S at this equilibrium.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Consider the following macroeconomy. All amounts are in millions (m.) of $:

C = 750 + 0.8 YD

                                   I = 1200

                                   G = 150

                                   T = 250

  1. Calculate eqm Y and prove that I=sum of S at this equilibrium.
  2. What is meant by the “Paradox of Thrift” (POT)? Go back to the original eqm of part a. Now prove using multiplier analysis that the POT holds in this economy by assuming that the change in co is -$50 m. As part of your answer, explain “intuitively” why this paradox exists.  Show what happens in the Z-Y space graph.
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