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Q: A truck moving at a speed of 35 km/h covers a distance of 140 km. If the truck covers the next 20 km distance in 30 minutes and the last 30 km distance at a speed of 60 km/h. what is the average speed of the truck (in km/h)?
  • A. 40
  • B. 42
  • C. 48.5
  • D. 38
Correct Answer: Option D -
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Explanations:

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