Zenith Foods Limited prepared a management report showing total revenue of ₦85,000,000 and a cost of sales of ₦52,000,000 for the quarter ended 31 March 2024. If operating expenses amounted to ₦18,500,000, what is the operating profit margin for the quarter?

Gross profit = ₦85,000,000 − ₦52,000,000 = ₦33,000,000. Operating profit = ₦33,000,000 − ₦18,500,000 = ₦14,500,000. Operating profit margin = (₦14,500,000 ÷ ₦85,000,000) × 100 = 17.06%. Wait — re-checking: 14,500,000/85,000,000 = 17.06%, not 38.82%. The correct answer is B.