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NTSE Sample Paper NTSE SAT Practice Test-10

  • question_answer
    What is the angle which equals one-fifth of its supplement?

    A) \[15{}^\circ \]                           

    B) \[30{}^\circ \]

    C) \[36{}^\circ \]                  

    D) \[75{}^\circ \]

    Correct Answer: B

    Solution :

    [b] \[x=\frac{1}{5}(180{}^\circ -x)\Rightarrow 5x=180{}^\circ -x\] or \[6x=180{}^\circ \]or \[x=30{}^\circ \]


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