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      Question

      Sonu saves 15% of her income. If her income increases by

      20% and she still saves the same amount as before, then what is the percentage increase in her expenditure? (correct to one decimal place)
      A 24.2 Correct Answer Incorrect Answer
      B 23.5 Correct Answer Incorrect Answer
      C 23.8 Correct Answer Incorrect Answer
      D 22.8 Correct Answer Incorrect Answer

      Solution

      Let the income of Sonu be Rs.100 Savings of Sonu = 100 × (15/100) = Rs. 15 Expenditure of Sonu = 100 – 15 = Rs. 85 New income of Sonu = 100 × (120/100) = Rs. 120 If savings amount same, then new expenditure = 120 – 15 = 105 Her expenditure increased by = 105 – 85 = 20 Her expenditure increased by = 20/85 × 100 ≈ 23.5%

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