Please assist in answering the following problems.
Using the DuPont model, perform ROI analysis for the following:
Q1. Firm D has net income of $83,700, sales of $2,790,000, and average total assets of $1,395,000. Calculate the firm's margin, turnover, and ROI.
Q2. Firm E has net income of $150,000, sales of $2,500,000, and ROI of 15%. Calculate the firm's turnover and average total assets.
Q3. Firm F has ROI of 12.6%, average total assets of $1,730,159, and turnover of 1.4. Calculate the firm's sales, margin, and net income. Round your answers to the nearest whole numbers.