Respuesta :

If, MPS=0.20, then.

MPC= 1-MPS= 1-0.20= 0.80.

Consumption Function is C = c + 0.80 Y where Y in the income in the economy and c= Autonomous consumption.

At equilibrium level of output,

AS=AD.

Y= C+I.

=> 1,200 = c + 0.80 (1,200) + 100.

=> 1,200 = c+ 960 + 100.

Answer:

C = a +bY. In this formula a is the level of autonomous consumption, where b is the marginal propensity to consume out of income.