Dont know its correct or not, just got from a student
National Saving
NATIONAL SAVING = Y-C-G
= 790
Investment
Investment function =
I=1000-70r
Interest Rate= r* = 3%
I = 997.9
Trade Balance
Trade
balance = NX = 700-700e
Then trade balance will
be 0
Private Saving
PRIVATE SAVING = Y-T-C
C=1010 + 0.70(Y-T)
= 5210
Private Saving = 7000-1000-5210
= 790