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Question Help Exercise 3.3 If the consumption function is C = 100+ 0.90 Y and planned investment spending is 500, what will b
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Answer #1

ANswe:

Given

C=100+0.9Y

I=500

So

A) at Equilibrium Y=C+I

Y=100+0.9Y+500

Y=$6000

B)

If Investment falls by 100 then New I =500-100=400

New Equilibrium Y=C+I

Y=100+0.9Y+400

Y=5000

So Equilibrium level of output falls by 6000-5000=$1000

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