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      Question

      Mahima’s expenditure and savings are in the ratio 5 : 3. Her income increases by 15%. Her expenditure also increases by 18%. By how many % does he saving increase?

      A 13% Correct Answer Incorrect Answer
      B 10% Correct Answer Incorrect Answer
      C 7% Correct Answer Incorrect Answer
      D 20% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let expense = 500 , savings = 300 & income = 800 So new expense = 500+ 18% of 500 = 500 + 90 = 590 & new income = 800 + 15% of 800 = 800 +120 = 920   So new savings  = 920 – 590 = 330  ∴ Required % increase in savings= (330 – 300 ) /300× 100 = 30 /300×100% = 10%

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