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8th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    The product of two rational numbers is  \[\frac{15}{16}\]. If one of the numbers is \[\frac{5}{4},\] what is the other number?

    A)  \[\frac{75}{64}\]                                             

    B)                         \[\frac{25}{64}\]             

    C)                         \[\frac{25}{4}\]               

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

    Correct Answer: D

    Solution :

    Let 'x' be the required number. Then \[x\times \frac{5}{4}=\frac{15}{16}\] \[\Rightarrow \] \[x=\frac{15}{16}\div \frac{5}{4}=\frac{15}{16}\times \frac{4}{5}=\frac{3}{4}\]


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