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Q: A person covers 30% of a journey with a speed of 40 km/h, 50% of journey with 60 km/h and rest with a speed of 40 km/h. What is his average speed for whole journey in km/h?
  • A. 45
  • B. 48
  • C. 47
  • D. 46
Correct Answer: Option B -
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Explanations:

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