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      Question

      A person saves 22% of his monthly income. If his monthly

      is increased by 45% and he still saves the same amount as before then find percentage increase (approximate) in his monthly expenditure.
      A 43.75% Correct Answer Incorrect Answer
      B 42.60% Correct Answer Incorrect Answer
      C 46.60% Correct Answer Incorrect Answer
      D 57.70% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let monthly of person is Rs. 100x Monthly savings = 0.22 × 100x = Rs. 22x Monthly expenditure = 100x – 22x = Rs. 78x His increased monthly income = 1.45 × 100x = Rs. 145x His monthly expenditure now = 145x – 22x = 123x Percentage increase in expenditure = [(123x – 78x)/78x] × 100 ~ 57.7%

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