While preparing its Year 4 financial statements, Dek Corp. discovered computational errors in its Year 3 and Year 2 depreciation expense. These errors resulted in overstatement of each year’s income by $25,000, net of income taxes. The following amounts were reported in the previously issued statements:

Western electric has 32,000 shares of common stock outstanding at a price per share of $79 and a rate of return of 13.00 percent. the firm has 7,300 shares of 7.80 percent preferred stock outstanding at a price of $95.00 per share. the preferred stock has a par value of $100. the outstanding debt has a total face value of $404,000 and currently sells for 111 percent of face. the yield to maturity on the debt is 8.08 percent. what is the firm's weighted average cost of capital if the tax rate is 39 percent?