given for a closed economyc 20

Question

Given for a closed economy:

C = $20 + 0.50Y_D

          I = $40

          G = $10

          Y_D = Y- T₀

          T₀ = $5

Determine:  (a)  the equilibrium level of aggregate or national income (Y);

                  (b)  the level of planned consumption;

                  (c)  the equality of total planned withdrawal and total planned injections.