2. Questions Bank
  3. 6th Class
  4. Mathematics
  5. Ratio and Proportion

6th Class Mathematics Ratio and Proportion Question Bank Ratio, Proportion & Unitary Method

  • 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 :

    Let \[x=3\]&\[y=1\] Then \[\left( {{x}^{3}}-{{y}^{3}} \right):\left( {{x}^{3}}+{{y}^{3}} \right)\] \[\Rightarrow \]\[\left( 27-1 \right):\left( 27+1 \right)\] \[\Rightarrow \]\[26:28\] \[\Rightarrow \]\[13:14\]


You need to login to perform this action.
You will be redirected in 3 sec spinner