Ruth keeps account of her family's expenses. She keeps track of the entire family's needs and discusses with other family members about what products need to be bought. She realizes that the family requires a bigger refrigerator and discusses this with her parents. She collects information about refrigerators from various brands so that her parents can make an informed decision. In the given scenario, Ruth plays the role of the in the household purchase process.

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?