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Q: A person covers first 100 km with a speed of 60 km/h and next 150 km with a speed of 45 km/h. What is his average speed for the whole journey (in km/h)?
  • A. 50
  • B. 52.5
  • C. 52.8
  • D. 53.5
Correct Answer: Option A -
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Explanations:

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