21. A firm has a tax burden (defined as net profit/pretax profit) of 0.6, a leverage ratio (defined as assets/equity) of 1.3, an interest burden (defined as pretax profit/EBIT) of 0.8, a ROE (defined as net profit/equity) of 18%, and a return on sales (defined as EBIT/Sales) of 10%. What is the firms asset turnover (defined as sales/assets)?

The answer is 2.88 times, I need the steps please