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Q: Gold is 17 times as heavy as water and 9 times as heavy as copper. The ratio in which these two metals be mixed so that mixture is 12 times as heavy as water is.
  • A. 4 : 3
  • B. 7 : 1
  • C. 3 : 5
  • D. 3 : 2
Correct Answer: Option C -
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Explanations:

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