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7th Class Mathematics Simple Equations Question Bank Simple Equation

  • question_answer
    Which of the given equation does not have 4 as the solution?                      

    A)  \[p+5=9\]                 

    B)         \[14-p=10\]               

    C)                     \[\frac{20}{p}=4\]               

    D)         \[9p=36\]       

    Correct Answer: C

    Solution :

    (a) \[p+5=9\,\,\Rightarrow p=9-5=4\] (b) \[14-p=10\Rightarrow p=14-10=4\Rightarrow p=4\] (c) \[\frac{20}{p}=\frac{4}{1}\Rightarrow 20=4p\] or \[4p=20\Rightarrow p=5\] (d) \[9p=36\Rightarrow p=\frac{36}{9}\text{=}4\] \[\therefore \] Option (c) does not have 4 as a solution.


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