An economy shows the following features
C=50+0.9(Y-T)
T=100
I=100-5i
G=100
L=0.2Y-10i
M/P=100
X=20
M=10+0.1Y
a) Obtain the IS and LM for this economy
b) Find out the equilibrium income rate and interest rate in this economy
c) Find the balance of trade