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      Question

      The ratio of the present ages of Ginni and Binni is 7:3

      respectively. Ginni is โ€˜nโ€™ years older than Binni. If after 5 years, the ratio of the ages of Binni to Ginni is 1:2, then find the value of โˆš (n+5).
      A 3 Correct Answer Incorrect Answer
      B 5 Correct Answer Incorrect Answer
      C 4 Correct Answer Incorrect Answer
      D 8 Correct Answer Incorrect Answer
      E 6 Correct Answer Incorrect Answer

      Solution

      Let the present ages of Ginni and Binni be 7x and 3x respectively. Here, n = 7x โ€“ 3x = 4x According to the question, => (7x + 5)/(3x + 5) = 2/1 => x = 5 Now, n = 4x = 20 Required value =ย โˆš(n+5) =ย โˆš(20+5) =ย โˆš25 = 5

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