Walker Corporation has provided the following financial data: The company's net operating income for Year 2 was $63, 615 and its interest expense was $15,000. Required: a. What is the company's working capital at the end of Year 2? b. What is the company's current ratio at the end of Year 2? c. What is the company's acid-test (quick) ratio at the end of Year 2? d. What is the company's times interest earned for Year 2? e. What is the company's debt-to-equity ratio at the end of Year 2? f. What is the company's equity multiplier at the end of Year 2