Return on Investment
Shown Below Are Selected Data from a Recent

Return on investment
Shown below are selected data from a recent annual report of Quality Service. (Dollar amounts are in millions.)
$$\begin{array} { | l | r | r | } \hline & \begin{array} { r } \text { Begirinirg } \\\text { of the Year }\end{array} & \begin{array} { c } \text { Erd of the } \\\text { Year }\end{array} \\\hline \text { Total assets } & \$ 6,000 & \$ 6,600 \\\hline \text { Total shareholders' equity } & \$ 3,200 & \$ 3,700 \\\hline \text { Pperatirip profit } & & \$ 2,000 \\\hline \text { Profit } & & \$ 1,900 \\\hline\end{array}$$ Compute for the year: $$\begin{array} { | l | l | l | } \hline \text { (a) } & \begin{array} { l } \text { Return on average total } \\\text { assets }\end{array} & \\\hline \text { (b) } & \begin{array} { l } \text { Return on average total } \\\text { equity }\end{array} & \\\hline\end{array}$$