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Q:

How many kgs of wheat costing Rs. 8 per kg must be mixed with 40 kg of rice costing Rs. 5.40 per kg, so that 20 % gain may be obtained by selling the mixture at Rs. 7.20 per kg? 

  • 1
    14kg
  • 2
    16kg
  • 3
    10kg
  • 4
    12kg
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Answer : 4. "12kg"

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