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8th Class Mathematics Linear Equations in One Variable Question Bank Linear Equations in One Variable

  • question_answer
    If \[3a+2b+c=22,b+c=8\]and \[c=6,\]what is the value of \[a+b+c\]?

    A)  \[12\]                                                  

    B)                         \[6\]                    

    C)                         \[2\]                                    

    D)                        \[4\]

    Correct Answer: A

    Solution :

    Given \[3a+2b+c=22\] \[b+c=8\]and \[c=6\] Therefore, \[~b=8-c=8-6=2\] and a \[a=\frac{22-c-2b}{3}\] \[=\frac{22-10}{3}=\frac{12}{3}=4\] Hence \[a+b+c=4+2+6=12\] \[=Rs.\,\,5306.04\]


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