Answer: 7.5%
Step-by-step explanation:
Interest rate on 2 year treasury security:
= Real interest rate + Average inflation rate + Maturity risk premium
Average inflation rate = (Inflation rate coming year + Inflation rate next year) / 2
= (4% + 5%) / 2
= 4.5%
Interest rate on 2-year treasury security is:
= 3% + 4.5% + 0%
= 7.5%