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7th Class Mathematics Simple Equations Question Bank Simple Equation

  • question_answer
    If \[\frac{9}{5}\] of a number is 45, what is \[\frac{1}{5}\] of the same number?

    A)  5                                

    B)         25                  

    C)         30                  

    D)         81

    Correct Answer: A

    Solution :

    Let the number be x. Then, \[\frac{9}{5}\] of \[x=45\Rightarrow \frac{9}{5}\times x=45\] \[\Rightarrow \] \[x=45\times \frac{5}{9}=25\] \[\therefore \] Number = 25 Now, \[\frac{1}{5}\] of the number \[=\frac{1}{5}\times 25=5\]


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