Bonds payable, 12% Stockholders' equity Current assets Tangible assets, net Intangible assets Investments Other assets Sales Operating expenses $1,000,000 1,800,000 1,870,000 1,600,000 40,000 120,000 90,000 4,000,000 3,620,000 Required: Assuming that this is the only information you will receive, estimate the following ratios: a. Times interest earned ratio b. Debt ratio C. Debt/equity ratio d. Debt to tangible net worth ratio