RATIO CALCULATIONS Assume the following relationships for the Caulder Corp.: 1.8x Sales/Total assets Return on assets (ROA) Return on equity (ROE) 3% 9% a. Calculate Caulder's profit margin assuming the firm uses only debt and common equity, so total assets equal total invested capital. Round your answer to two decimal places. % b. Calculate Caulder's debt-to-capital ratio assuming the firm uses only debt and common equity, so total assets equal total invested capital. Round your answer to two decimal places. %