A man covers half of his journey at 6 km/hr and the remaining half at 3 km/hr. His average speed is _____?

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A man covers half of his journey at 6 km/hr and the remaining half at 3 km/hr. His average speed is _____? Answer: 4 km/hr

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.