Use the Following Information to Answer Question Hays Company Has Set a Target Return on Investment (ROI)

Use the following information to answer Question. Renfro Company has two divisions, the Restaurants Division and the Commissary Division. The following information was gathered for the two divisions in 2012: $$\begin{array} { | l | l | l | } \hline & \begin{array} { l } \text { Restaurants } \\\text { Division }\end{array} & \begin{array} { l } \text { Commissary } \\\text { Division }\end{array} \\\hline \text { Operating Income } & \$ 4,000,000 & \$ 1,500,000 \\\hline \text { Operating Assets } & \$ 30,000,000 & \$ 10,500,000 \\\hline\end{array}$$
Hays Company has set a target return on investment (ROI) of 12% for both divisions.
Assuming that these are the only divisions of Renfro Company, calculate ROI for the company as a whole.