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    Question

    Find the difference between the total staffs at ‘Y’

    and ‘Z’.
    A 160 Correct Answer Incorrect Answer
    B 200 Correct Answer Incorrect Answer
    C 240 Correct Answer Incorrect Answer
    D 180 Correct Answer Incorrect Answer
    E 120 Correct Answer Incorrect Answer

    Solution

    Let the number of female staffs at ‘Z’ be ‘x’ Therefore, number of male staffs at ‘X’ = (x + 480) Number of male staffs at ‘Z’ = 1.25(x + 480) According to the question, => (x + 480) + 600 + 1.25(x + 480) = 2220 => 2.25x = 2220 – 1680 => 2.5x = 540 => x = 240   Therefore, number of male staffs at ‘X’ = (x + 480) = 720 Number of male staffs at ‘Z’ = 1.25(x + 480) = 900 Number of female staffs at ‘X’ = (1/3) × 600 = 200 Number of female staffs at ‘Y’ = 960 – 600 = 360 Required difference = 1140 - 960 = 180

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