If income increases from 3,000 to 4,000, and autonomous investment increases by 200, the MPC should be
0.9
0.8
0.7
0.6
Multiplier (M) = ΔYΔA
= (4000−3000)200
= 5
MPS = 1M = 0.2
Therefore, MPC = 1 - MPS = 0.8
If investment increases from 400 to 600 and income increases from 3,000 to 4,000, the MPS should be equal to
Autonomous increase in investment always causes an autonomous increase in income.
Calculate Investment expenditure:
National income = 700
Autonomous consumption = 70
MPC = 0.8
OR
Calculate equilibrium level of income from the following:
Consumption expenditure at zero level of income = 60
MPC = 0.9
Investment =100