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How many kilogram of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg?

  • A.36 kg
  • B.42 kg
  • C.54 kg
  • D.63 kg

Answer: D

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