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Basic Question 1 of 10
Operating margin is calculated as:
A. (Net Income / Sales) * 100
B. (Operating Income / Sales) * 100
C. (Sales / Operating Income) * 100
D. (Gross Profit / Sales) * 100
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I am happy to say that I passed! Your study notes certainly helped prepare me for what was the most difficult exam I had ever taken.

Andrea Schildbach
Learning Outcome Statements
evaluate whether economies of scale are present in an industry by analyzing operating margins and sales levels;
demonstrate methods to forecast cost of goods sold and operating expenses;
demonstrate methods to forecast nonoperating items, financing costs, and income taxes;
CFA® 2025 Level I Curriculum, Volume 2, Module 17.