[The following information applies to the questions displayed below.]

King Mattresses sells both mattress sets and bed frames. Last quarter, total sales were $50,000 for mattress sets and $30,000 for bed frames. Return on investment (ROI) was 10% for both divisions, while asset turnover (AT) was 5 for mattress sets and 1 for bed frames.

Compute King Mattressess total return on sales (ROS) for the quarter.

Return on Sales (ROS)? _____________%