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      Question

      Monthly savings of β€˜Q’ is 20% more than that of

      β€˜P’ and is 48% less than monthly income of β€˜P’. Monthly expenditure of β€˜Q’ is Rs. 4260 and ratio of monthly income of β€˜P’ and β€˜Q’ is 15:22, respectively. Find monthly expenditure of β€˜P’.
      A Rs. 2628 Correct Answer Incorrect Answer
      B Rs. 2550 Correct Answer Incorrect Answer
      C Rs. 2772 Correct Answer Incorrect Answer
      D Rs. 1460 Correct Answer Incorrect Answer
      E Rs. 1848 Correct Answer Incorrect Answer

      Solution

      Let monthly income of β€˜P’ and β€˜Q’ be Rs. β€˜15x’ and Rs. β€˜22x’, respectively Monthly savings of β€˜Q’ = 52% Γ— 15x = Rs. 7.8x Monthly savings of β€˜P’ = {7.8/1.2} = Rs. 6.5x Monthly expenditure of β€˜P’ = 15x – 6.5x = Rs. 8.5x Monthly expenditure of β€˜Q’ = 22x – 7.8x = Rs. 14.2x Or, 14.2x = 4260 Or, x = 4260/14.2 Or, x = 300 Monthly expenditure of β€˜P’ = 8.5 Γ— 300 = Rs. 2550Β Β 

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