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    Question

    If a:b:c = (1/6) :(1/8) :(1/5) , and a + b + c = 236,

    then find the value of (c - a) .
    A 12 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 18 Correct Answer Incorrect Answer
    D 24 Correct Answer Incorrect Answer

    Solution

    Given: (1/6) :(1/8) :(1/5)

    Multiplying throughout by 120 (LCM of 6, 8 and 5) , we get

    So, a:b:c = 20:15:24

    Let 'a' = '20x', 'b' = '15x' and 'c' = '24x'

    So, 20x + 15x + 24x = 236

    So, 59x = 236

    So, x = 4

    So, required value = 24x - 20x = 4x = 4 X 4 = 16

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