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    Question

    The current heights of A, B, and C are in the ratio of

    10:12:15. After one year, the height of A increases by 20%, the height of B increases by 33(1/3)%, and the height of C increases by 66(2/3)%. What will be the new ratio of their heights after one year?
    A 17:15:21 Correct Answer Incorrect Answer
    B 25:18:16 Correct Answer Incorrect Answer
    C 12:15:32 Correct Answer Incorrect Answer
    D 12:16:25 Correct Answer Incorrect Answer

    Solution

    Let current heights of β€˜A’, β€˜B’ and β€˜C’ be β€˜10x’ cm, β€˜12x’ cm and β€˜15x’ cm, respectively After 1 year: Height of β€˜A’ = (6/5) Γ— 10x = β€˜12x’ cm Height of β€˜B’ = (4/3) Γ— 12x = β€˜16x’ cm And height of β€˜C’ = (5/3) Γ— 15x = β€˜25x’ cm So, ratio of new heights of β€˜A’, β€˜B’ and β€˜C’ = 12x:16x:25x = 12:16:25

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