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    Question

    If 80% of (X - Y) is equal to 40% of 60% of (X + Y), then

    what is the value of Y:X?
    A 3:5 Correct Answer Incorrect Answer
    B 5:4 Correct Answer Incorrect Answer
    C 2:3 Correct Answer Incorrect Answer
    D 1:7 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Given

    80% of (X - Y) = 40% of 60% of (X + Y)

    Or, 4 ├Ч (X - Y) = 3 ├Ч (X + Y)

    Or, 4X - 4Y = 3X + 3Y

    Or, X = 7Y

    Or, Y/X = 1/7

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