If 80 people complete the bridge in 20 days, then the total man-days required to complete the bridge is 80 people * 20 days = 1600 man-days. Rounding up to the nearest whole number, 70 people will take approximately 23 days to complete the bridge
The bridge is completed in 20 days by 80 men. How long will it take 70 men to complete the work?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.