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7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    If\[2A=3B=4C\]. what is the value of\[A:B:C\]?

    A)  \[2:3:4\]             

    B)         \[4:3:2\]

    C)  \[3:4:6\]             

    D)         \[6:4:3\]  

    Correct Answer: D

    Solution :

     Let \[2A=3B=4C=k\] \[\Rightarrow \] \[A:B:C=\frac{k}{2}:\frac{k}{3}:\frac{k}{4}\]                 \[=\left( \frac{k}{2}\times 12 \right):\left( \frac{k}{3}\times 12 \right):\left( \frac{k}{4}\times 12 \right)\] [L.C.M of 2,3,4 is 12.] Hence, \[A:B:C=6:4:3\]


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