Anopeneconomyisdescribedbythefollowingsystemofmacroeconomicequations,inwhich
allmacroeconomicaggregatearemeasuredinbillionsofNamibiandollars,N$:
Y=C +I+G+X-M
C =100+0.75Yd
T=50+0.5Y
X=200
M=50+0.25Y
G=150
Where: Yisdomesticincome
Yisprivatedisposableincome
Cisaggregateconsumption
Tisgovernmenttaxrevenue
Iisinvestmentspending
Xrepresentsexports
Mrepresentsimportsofgoodsandservice
(a)Determinetheequilibriumlevelofincome/output. (4)
(b)Illustrateaggregatespendingandequilibriumlevelofincomeonadiagram
(4)
(c)Determinethesurplus/deficitinthegovernmentbudgetatequilibrium.
(4)
(d)Determinetradebalanceatequilibrium. (4)
(e)Determinethevalueoftheeconomy’smultiplier,whichisapplicabletogovernment
spending,andinterpretit.
(5)
(f)Usethemultiplierapplicabletoexport,toexplainhowa100–billiondeclineindemand
forexportcouldaffecttheeconomy’s:
(i) GDP/income (3)
(ii) Balanceofpayment (4)
(iii) Governmentbudget (4)
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