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    Question

    The ratio of the present ages of β€˜A’ and β€˜B’ is

    3:2, respectively. Four years hence from now, the age of β€˜B’ will be 20 years. If the average of present ages of β€˜A’, β€˜B’ and β€˜C’ is 25 years, then find the present age of β€˜C’.
    A 35 years Correct Answer Incorrect Answer
    B 30 years Correct Answer Incorrect Answer
    C 33 years Correct Answer Incorrect Answer
    D 37 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the present ages of β€˜A’ and β€˜B’ be 3x years and 2x years, respectively Therefore, 2x + 4 = 20 Or, 2x = 16 Or, x = 8 Sum of present ages of β€˜A’ and β€˜B’ = 3x + 2x = 40 years Sum of present ages of β€˜A’, 'B’ and β€˜C’ = 25 Γ— 3 = 75 years Therefore, present age of β€˜C’ = 75 – 40 = 35 years

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