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Q: An alloy is made by mixing metal A costing Rs. 2000/kg and metal B costing Rs. 400/kg on the ratio A : B = 3 : 1. What is the cost (in Rs.) of 8 kg of this alloy?
  • A. 1600
  • B. 9800
  • C. 6400
  • D. 12800
Correct Answer: Option D -
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Explanations:

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