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    Question

    An angle is equal to 3/7 of its supplement. The angle is

    :
    A 54° Correct Answer Incorrect Answer
    B 84° Correct Answer Incorrect Answer
    C 75° Correct Answer Incorrect Answer
    D 80° Correct Answer Incorrect Answer

    Solution

    let angle be x So x = 3(180 - x)/7 7x= 540 - 3x  10x = 540   x = 540/10 x = 54

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