Company Y plans to diversify into an activity where Company X has an equity beta of 1.6, a debt beta of zero and gearing of 50% (debt/debt plus equity).
The risk-free rate of return is 5% and the market portfolio is expected to return 10%.
The rate of corporate income tax is 30%.
What would be the risk-adjusted cost of equity if Company Y has 60% equity and 40% debt?