Final answer:
The equilibrium rate of return for the security is 11.65%.
Step-by-step explanation:
The equilibrium rate of return for a security can be calculated by summing up all the risk premiums and adding them to the real risk-free rate. In this case, the default risk premium is 4 percent, the inflation risk premium is 3.85 percent, the real risk-free rate is 2.90 percent, the liquidity risk premium is 0.15 percent, and the maturity risk premium is 0.75 percent. Therefore, the equilibrium rate of return for the security is:
Equilibrium Rate of Return = Default Risk Premium + Inflation Risk Premium + Real Risk-Free Rate + Liquidity Risk Premium + Maturity Risk Premium
= 4% + 3.85% + 2.90% + 0.15% + 0.75% = 11.65%