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      Question

      The average age of Vimal and Kamali is 24 years, and the

      ratio of Kamali's age to Surya's age is 4:5. If the average age of Vimal, Kamali, and Surya is 21 years, and the ratio of the present ages of Vimal to Surya is the same as the ratio of Hari's age to Kalyan's age in 3 years, with the average present age of Hari and Kalyan being 22.5 years, what is Kalyan's current age?
      A 11 years Correct Answer Incorrect Answer
      B 13 years Correct Answer Incorrect Answer
      C 12 years Correct Answer Incorrect Answer
      D 14 years Correct Answer Incorrect Answer
      E 22 years Correct Answer Incorrect Answer

      Solution

      Vimal + Kamali = 24 * 2 = 48 Vimal + Kamali + Surya = 21 * 3 = 63 Surya = 63 – 48 = 15 Kamali = 4/5 * 15 = 12 Vimal = 48 – 12 = 36 Ratio of the ages of Hari and Kalyan after 3 years = 36:15 = 12:5 Hari + Kalyan = 22.5 * 2 = 45 Kalyan age after 3 years = 51 * 5/17 = 15 years Present age of Kalyan = 15 – 3 = 12 years

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