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Q: A racing car going at an average speed of 108 km/hr takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (in km/hr) to complete the lap in 12 minutes?
  • A. 24
  • B. 21
  • C. 27
  • D. 30
Correct Answer: Option C -
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Explanations:

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