Homework Answers
Y = C + I + G + NX
900 = (320 + 0.5Y - 200r) + (200 - 300r) + 100 + (140 + 0.1Y - 0.5e)
900 = 320 + 0.5(900) - 200r + 200 - 300r + 100 + 140 + 0.1(900) - 0.5(18 + 600r)
900 = 320 + 450 - 200r + 200 - 300r + 100 + 140 + 90 - 9 - 300r
900 = 1291 - 800r
800r = 1291 - 900
800r = 391
r = 391 / 800
r = 0.48 is the answer.
e = 18 + 600r
e = 18 + 600(0.48)
e = 18 + 288 = 306 is the answer.
C = 320 + 0.5Y - 200r
C = 320 + 0.5(900) - 200(0.48)
C = 320 + 450 - 96
C = 674 is the answer.
I = 200 - 300r
I = 200 - 300(0.48)
I =200 - 144 = 56 is the answer.
NX = 140 + 0.1Y - 0.5e
NX = 140 + 0.1(900) - 0.5(306)
NX = 140 - 90 - 153
NX = -103 is the answer.
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