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7th Class Mathematics Rational Numbers Question Bank Rational Number

  • question_answer
    By what rational number should \[\frac{-8}{39}\]. Be multiplied to obtain 26?

    A) \[\frac{507}{4}\]

    B)                        \[\frac{-507}{4}\]  

    C) \[\frac{407}{4}\]                              

    D)        \[-\frac{407}{4}\]

    Correct Answer: B

    Solution :

    Let the required rational number Be 'x'. Then \[x\times \frac{-8}{39}=26\] \[\Rightarrow \]\[x=\frac{26}{\frac{-8}{39}}=26\times \frac{39}{-8}=\frac{-507}{4}\]


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