Answer:
The market risk premium is 7.2%.
Step-by-step explanation:
We are required to calculate the market risk premium (P).
Debt to value ratio = D/V = 0.5
Debt to equity ratio = D/E = 0.5 / (1 - 0.5) = 1
Unlevered beta = 1.25
Tax rate = t = 0%
Levered beta = Unlevered beta x [1 + (1 - t)] x D/E
= 1.25 x (1 + 1) x 1
= 2.5
We are informed that the cost of equity capital went up by 9% after levering to a debt to value ratio of 0.5. This implies the following:
(Levered beta - Unlevered beta) x Market risk premium = Change in cost of equity capital
⇒ (2.5 - 1.25) x P = 9%
⇒ 1.25 x P = 9%
⇒ P = 9% / 1.25
⇒ P = 7.2%
Therefore, the market risk premium is 7.2%.