Question

    A 2:7 Correct Answer Incorrect Answer
    B 2:5 Correct Answer Incorrect Answer
    C 1:3 Correct Answer Incorrect Answer
    D 3:8 Correct Answer Incorrect Answer

    Solution

    Let the age of father and his son be F and S years. according to question, F + S = 52------(i) and S + 4 = 1/4(F + 4) Putting value of F, from (i) 4S + 16 = 52 - S + 4 4S + 16 = 56 - S 5S = 40 S = 8 Therefore, F = 44 Ratio after 10 years = (8 + 10) : (44 + 10) = 1 : 3

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