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8th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    The product of two rational numbers is \[\frac{-28}{81}\]. If one of the numbers is\[\frac{14}{27}\], then find the other number.

    A)  \[\frac{2}{5}\]                                                           

    B)  \[\frac{8}{17}\]                     

    C)  \[-\frac{2}{3}\]                     

    D)  \[-\frac{4}{3}\]                     

    Correct Answer: C

    Solution :

            Product\[=\frac{-28}{81}\] One of the two numbers\[=\frac{14}{27}\] \[\therefore \]Other number\[=\frac{\text{Product}}{\text{First number}}=\frac{-28}{81}\div \frac{14}{27}\] \[=\frac{-28}{81}\times \frac{27}{14}=\frac{-2}{3}\]


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