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Q: How many kg of salt costing `28 per kg must be mixed with 39.6 kg of salt costing `16 per kg, so that selling the mixture at `29.90, there is a gain of 15%?
  • A. 138
  • B. 198
  • C. 200
  • D. 130
Correct Answer: Option B -
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Explanations:

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