The following percentages were computed using figures from recent annual reports of Weis Markets, a large grocery store chain, and Sprint Corporation, a provider of telecommunication services. Weis Sprint Allowance for doubtful accounts as a percentage of net sales 0.06 % 0.59 % Accounts receivable as a percentage of net sales 2.5 6.6 Why are Sprint's percentages so much larger than Weis Markets' percentages?

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?