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      Question

      The monthly incomes of P and Q

      are in the ratio 3:4. P’s monthly expenditure is 25% less than that of Q. If P and Q save Rs. 9,450 and Rs. 12,600 per month, respectively, what is their average monthly income?
      A Rs.12000 Correct Answer Incorrect Answer
      B Rs.5000 Correct Answer Incorrect Answer
      C Rs.4000 Correct Answer Incorrect Answer
      D Can't be determined Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let the monthly expenditure of 'Q' be Rs. β€˜x’. So, the monthly expenditure of 'P' = Rs. 0.75x According to question: (x + 12600)/(0.75x + 9450) = 4/3 3x + 37800 = 3x + 37800 0 = 0 Here β€˜x’ is eliminated. So, the desired answer can’t be determined

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