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8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    The ratio of number of males to number of females in a club are 7:4. If there are 84 males in the club, the total number of members in the club are

    A) 126                             

    B) 132

    C) 136                             

    D) 148

    Correct Answer: B

    Solution :

    Let males = 7x Females = 4x Given that, \[{{x}^{4}}+3{{x}^{3}}-4{{x}^{2}}-3x-5\] \[{{x}^{4}}+3{{x}^{3}}+4{{x}^{2}}-3x-5\] \[{{x}^{4}}+3{{x}^{3}}+4{{x}^{2}}+3x-5\] Total number of members \[=3{{x}^{2}}-2x+1,\].


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