For a company, you are given: (i) It has 5 million shares outstanding with price 40. (ii) It has 100,000,000 of debt. (iii) Its equity beta is 1. (iv) Its debt cost of capital is 0.06. (v) Its weighted average cost of capital is 0.076. The risk free rate is 0.04 and the market risk premium is 0.05. Calculate the corporate tax rate