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1. The 20"-diameter wheels of a car rotates at rate of 24 revolutions per minute, while the 30"-diameter wheels of another car travels at a rate of 18 revolutions per minute. What is the ratio of the speed of the second car to that of the first?

  • A. 4 : 3
  • B. 4 : 3
  • C. 4 : 3
  • D. 4 : 3

Answer: Option C

Explanation:


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