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      Question

      How many kilograms of wheat, priced at Rs 6.4/kg, should

      be mixed with 10 kg of gram flour priced at Rs 4.8/kg, such that by selling the mixture at a 20% profit, the selling price ┬а is Rs. 1.12 more than the average cost price per kg of both varieties of the mixture?
      A 20 kg Correct Answer Incorrect Answer
      B 15 kg Correct Answer Incorrect Answer
      C 10 kg Correct Answer Incorrect Answer
      D 12 kg Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, we can say that Let the quantity of Rs 6.4/kg be a kg. S.P of mixture= Rs [1.12 + (6.4 + 4.8)/2]=1.12 + 5.6= Rs 6.72 According to question, =>(a ├Ч 6.4 + 4.8 ├Ч 10) ├Ч 120/100= 6.72(a + 10) =>6.4a ├Ч 120/100 + 48 ├Ч 120/100= 6.72a + 67.2 =>0.96a= 9.6 ┬аa= 9.6/0.96= 10kg.

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