Answer:
net profit margin times asset turnover.
Explanation:
Return on assets is a financial ratio that shows to how efficient an entity's management is at using its assets to generate income.
A company's return on assets (ROA) is calculated as the ratio of net income in a given period to the average total assets for the period. It is further determined as net profit margin times asset turnover.
Given that
Net profit margin = net income/sales
assets turnover = sales/ average total asset
Return on assets = Net profit margin * assets turnover
= net income/sales * sales/ average total asset
= net income/average total asset
