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      Question

      A girl’s age is 155% of what it was 10 years ago, but

      55% of what it will be after 10 years. What is her present age?
      A 32 years Correct Answer Incorrect Answer
      B 21 years Correct Answer Incorrect Answer
      C 31 years Correct Answer Incorrect Answer
      D 29 years Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the girl's present age be 'x' years. According to question, => 1.55 × (x-10) = 0.55 × (x+10) => 1.55x – 15.5 = 0.55x + 5.5 => x = 21 years

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