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

  • question_answer
    Find the value of\[x:y,\frac{8x-10y}{3x+4y}=\frac{4}{5}\]

    A) \[55:29\]                      

    B) \[36:17\]

    C) \[33:14\]                      

    D) \[16:11\]

    Correct Answer: C

    Solution :

    \[\frac{8x-10y}{3x+4y}=\frac{4}{5}\] \[\Rightarrow \]\[5(8x-10y)=4(3x+4y)\] \[\Rightarrow \]\[40x-50y=12x+16y\] \[\Rightarrow \]\[28x=66y\] \[\Rightarrow \]\[\frac{x}{y}=\frac{66}{28}\] \[\Rightarrow \]\[x:y=33:14\]


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