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    Question

    There are three distinct numbers ‘x’, ‘y’ and

    ‘z’. If, x = 180, (x + y) = 480 and (z – y) = 60, then find the average of x, y and z.
    A 280 Correct Answer Incorrect Answer
    B 260 Correct Answer Incorrect Answer
    C 270 Correct Answer Incorrect Answer
    D 300 Correct Answer Incorrect Answer

    Solution

    Given, x = 180, (x + y) = 480 and (z – y) = 60Therefore, y = 480 – 180 = 300And, z = 300 + 60 = 360Required average = (180 + 300 + 360)/3 = 840/3 = 280

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