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Q: A truck driver drives at a speed of 60 km/h for three hours. Then he stopped for an hour and did not go and where After that, he drives at a speed of 60 km/h for four hours what was the average speed of that driver (in km/h)?
  • A. 50.5
  • B. 62.4
  • C. 42.8
  • D. 52.5
Correct Answer: Option D -
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Explanations:

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