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5th Class Mathematics Arithmetic Question Bank Arithmetic

  • question_answer
    If x : y=3 : 1 then find\[({{x}^{3}}-{{y}^{3}}):({{x}^{3}}+{{y}^{3}})=?\]

    A)  13 : 14            

    B)  14 : 13

    C)  10 : 11            

    D)  11 : 10

    Correct Answer: A

    Solution :

     \[({{3}^{3}}-1):({{3}^{3}}+1)\] \[(27-1):(27+1)=26:28=13:14\]


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