A corporations capital structure is composed of debt, preferred stock, and common stock. The risk-free rate of interest is 1.5 percent, the common stock beta is 1.62, and the market risk premium is 6.5 percent. If the percentage of common equity in the corporations capital structure is equal to the sum of the percentages of preferred stock and debt in the corporations capital structure, the percentage of the corporations capital structure in debt is equal to ____percent.