need help with question 9

Campbell Candy Corporation desires a 13% return on investment (ROi) on all operations. The following information was avallable for the company for the current year \begin{tabular}{lr} Sales & $16,600 \\ Operating income & $4,280 \\ Turnover & 8.5 \\ \hline \end{tabular} What is the corporation's ROr? (Do not round Intermedlate calculatlons. Round your final answer to 2 decimal places.)