One quantity of what costing Rs. 9.30 per kg is mixed with another quantity of wheat costing Rs. 10.80 per kg, then what will be the ratio in which they must b mixed so that the net cost is Rs. 10 per kg?

• 8:7 is the answer
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• Please.. Explain it
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• 1st costing is 9.30 and second costing is 10.80 per kg and mean is 10 per kg. So we have to find out ratio of mixing of two quantities? So by applying allegations rule we can solve this
  So rs 0.70 is to be added for 1st costing and rs 0.80 is to be subtracted from second costing so that we can achieve mean rs 10. Now the required ratio is second costing difference / first costing difference =0.8/0.7=8/7 or 8:7
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