8th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    Find the value of \[\left( \frac{5}{9}\div \frac{15}{36} \right)\div \left( \frac{-5}{6} \right)\].

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

    B)                         \[\frac{3}{5}\]                  

    C)                         \[\frac{-8}{5}\]                                

    D)                         \[\frac{-3}{8}\]

    Correct Answer: C

    Solution :

    Simplify within brackets first and then simplify the resultant. \[\left( \frac{5}{9}\div \frac{15}{36} \right)\div \left( \frac{-5}{6} \right)\] \[=\left( \frac{5}{9}\times \frac{36}{15} \right)\times \left( \frac{6}{-5} \right)=\frac{4}{3}\times \frac{6}{-5}\] \[=\frac{8}{-5}=\frac{-8}{5}\]


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