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Q: The ratio of sand to gravel in a mixture is 7:8 while that of gravel and cement is 6:7. What is the ratio of sand to cement in the mixture?
  • A. 49 : 48
  • B. 7 : 7
  • C. 8 : 6
  • D. 3 : 4
Correct Answer: Option D -
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Explanations:

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