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JEE Main & Advanced Mathematics Equations and Inequalities Question Bank Self Evaluation Test - Linear Inequalities

  • question_answer
    The marks obtained by a student of class \[XI\]in first and second terminal examinations are 62 and 48, respectively. The minimum marks he should get in the annual examination to have an average of at least 60 marks, are

    A) 70

    B) 50

    C) 74

    D) 48

    Correct Answer: A

    Solution :

    [a] Let x be the marks obtained by student in the annual examination. Then, \[\frac{62+48+x}{3}\ge 60\] or \[110+x\ge 180\] or \[x\ge 70\] Thus, the student must obtain a minimum of 70 marks to get an average of at least 60 marks.


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