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7th Class Mathematics Algebraic Expressions Question Bank Algebraic Expressions

  • question_answer
    If \[p+\frac{9}{5}(30-p)=10\]then find ?p?:

    A) \[-50\]                           

    B)  55

    C) \[-50\]                           

    D)  +50

    Correct Answer: B

    Solution :

    (b) \[-+54-\frac{9p}{5}=10\Rightarrow \frac{-4p}{5}=10-54\] \[\Rightarrow \]\[\frac{-4p}{5}=-44\Rightarrow p=+44\times \frac{5}{4}=+55\]


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