If we know that a firm has a net profit margin of $4\mathrm{.}6\%,$ total asset turnover of $0\mathrm{.}67,$ and a financial leverage multiplier of $1\mathrm{.}44,$ what is its$$ ROE? What is the advantage to using the DuPont system to calculate ROE over the direct calculation of earnings available for common stockholders divided by common stock$$ equity?

The$$ firm's ROE is