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      Question

      The respective ratio of monthly income of A to monthly

      income of B is 9:10, and A’s saving is (100/11)% more than B’s saving. Find the expenditure of A, if the sum of monthly income of A and B is Rs. 76000, and expenditure of B is Rs. 18000.
      A Rs. 12000 Correct Answer Incorrect Answer
      B Rs. 10000 Correct Answer Incorrect Answer
      C Rs. 12500 Correct Answer Incorrect Answer
      D Rs. 12700 Correct Answer Incorrect Answer
      E Rs. 12900 Correct Answer Incorrect Answer

      Solution

      Let monthly income of A and B be 9x and 10x, respectively. Then, 9x + 10x = 76000 19x = 76000, x = 4000 A’s monthly income = 9x = Rs. 36000 B’s monthly income = 10x = Rs. 40000 Given, expenditure of B = Rs. 18000 So, B’s saving = 40000 – 18000 = Rs. 22000 Then, A’s saving = 22000 + (1/11) × 22000 = 22000 + 2000 = Rs. 24000 A’s expenditure = 36000 – 24000 = Rs. 12000

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