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A grain trader spends ₹600 on wheat at ₹20 per kg, another ₹600 at ₹25 per kg and another ₹600 at ₹30 per kg. What is his average purchase price per kg?

Competition practiceStatistics
  • A₹25
  • B₹24.67
  • C₹25.33
  • D₹24.32

Step-by-Step Solution

Equal money at each price → harmonic mean. Quantity bought kg for ₹1,800, so per kg. (₹25 is the simple average of the prices.)
Answer: D) ₹24.32

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