Hose plc presently has a capital structure which is 30% debt and 70% equity. The cost of debt before taxes is 8% and for equity 15%. The firm's future cash flows, after tax but before interest, are expected to be a perpetuity of 650.000. The taks rate is 40%

Required a. Calculate the WACC and the value of the firm.

The directors are considering the partial replacement of equity with debt. With new borrowings debt amounts to a total of 60%. Director A believes that cost of equity remains constant at 15%. Director B, however, believes that shareholders demand a rate of return of 23,7%. Director C believes that shareholders demand a rate of 17% and director D expects that rate of return shifts to 28%. Assuming that cost of debt remains at 9%

Required b. Calculate WACC and the value of the firm under each of these assumptions.