Answer: See explanation
Step-by-step explanation:
The increase in income for Spendia will be:
= 1 / (1 - MPC)
where MPC = 0.8
= 1 / (1 - 0.8)
= 1 / 0.2
= 5
Increase in income = Gross investment × multiplier
= $100 × 5
= $500 million
The increase in income for Savia will be:
= 1 / (1 - MPC)
where MPC = 0.5
= 1 / (1 - 0.5)
= 1 / 0.5
= 2
Increase in income = Gross investment × multiplier
= $100 × 2
= $200 million