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Q: X and Y are two alloys of copper and aluminium prepared by mixing the metals in the ratio 6 : 5 and 5 : 9 respectively. If equal quantities of the alloys are melted to form a third alloy Z, what ratio of copper and aluminium will be in Z?
  • A. 154 : 163
  • B. 139 : 154
  • C. 165 : 139
  • D. 139 : 169
Correct Answer: Option D -
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Explanations:

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