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A train covers a distance of 400 km at a speed of 20 km/h. How much time will it take?

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A train covers a distance of 400 km at a speed of 20 km/h. How much time will it take? Answer: 20

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.