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The income before income tax expense was $464,400 and $406,400 for the current and previous years, respectively. a. Determine the ratio of llabilities to stockholders' equity at the end of each year. Round your answers to one decimal place. b. Determine the times interest earned ratio for both years. Round your answers to one decimal place. c. The ratio of liabilities to stockholders' equity has and the number of times bond interest charges were earned has from the previous year. These results are the combined result of a income before income taxes and interest expense in the current year compared to the previous year