Last year K. Billingsworth & Co. had earnings per share of $4 and dividends per share of $2. Total retained earnings increased by $12 million
during the year, while book value per share at year-end was $40. Billingsworth has no
preferred stock, and no new common stock was issued during the year. If its year-end
total debt was $120 million, what was the company’s year-end total debt to total capital
ratio?