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9th Class Mathematics Linear Equations in Two Variables Question Bank Linear Equations in Two Variables

  • question_answer
    Mayank and Sujata, two students of class 9th together contributed Rs. 1000 to PPM relief fund. (i) Find the linear equation satisfying the data. (ii) If Sujata contributed Rs. 475 then how much Mayank contributed.

    A)
    (i) (ii)
    \[2x+y=1000\] 575
                   

    B)
    (i) (ii)
    \[x+y=1000\] 525
                   

    C)
    (i) (ii)
    \[0.x+1.y=100\] 575
                   

    D)
    (i) (ii)
    \[2x+2y=500\] 525

    Correct Answer: B

    Solution :

              (i) Let Mayank contributed Rs. \[\times \]and Sujata contributed Rs. y. According to question, \[x+y=1000\]                                        ?(i) (ii) Now, if Sujata contributed Rs. 475 then y = 475 From (1), \[x+475=1000\Rightarrow x=525\] So, Mayank contributed Rs. 525.


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