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Q: Rajinder drives his car at a speed of 40 km/h to cover half of his total distance of his journey and then he increases his speed to 60 km/h. He completes his journey in 7 hours. What is the average speed of Rajinder in this journey?
  • A. 50 km/hr
  • B. 52 km/hr
  • C. 54 km/hr
  • D. 48 km/hr
Correct Answer: Option D -
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Explanations:

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