Final answer:
The profit margin can be calculated by dividing the net income by the net sales and multiplying by 100. The correct profit margin for Martinez Corporation is 18.5%.
Step-by-step explanation:
The profit margin can be calculated by dividing the net income by the net sales and multiplying by 100. The formula for profit margin is:
Profit Margin = (Net Income / Net Sales) x 100
Using the given information:
Profit Margin = (141,525 / 765,000) x 100 = 18.5%
Therefore, the correct answer is E. 18.5%.