1.Assuming it is a open economy.Y = C+I+G+NXG =60C = Ca + MPCx(1-tax)*YCa = 10MPC = 0.6TAX=0.333C=10+0.6*(0.667)*Y=10+0.442YI = 30NX=EP-IPNX=20-Y(1-tax)*0.2=20-0.1334YY = 10+0.442Y+30+60+20-0.1334Y0.6914Y=120Y=1742.newtaxrate=0.333*1.5=0.4995Y=10+0.303Y+30+60+20-0.101Y0.798Y=120Y=150...
