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i have the answer, but need to know how to solve. Please explajn step by step.

Situation 20-1 Assume a closed economy with no government. Suppose that autonomous consumption equals $400, planned investmen
24) Using the information contained in Situation 20-1, if autonomous consumption increases by $100, then equilibrium aggregat
25) Using the information contained in Situation 20-1, if planned investment decreases by $100, the equilibrium aggregate out
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Imum of 100) c = $400 T 8500, mpe = 0.9 - siner, C+1 Y: CHI Yo Te + hepcly] + Ī - Consumption function (c = c + mpcY) y = $40

A. - planned I me 1957, ceny i ogromnet oil change in Investment 1-M multiplier change in agg. output. a AY- - $100) I 1-0.9

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