10th Class Mathematics Pair of Linear Equations in Two Variables Question Bank Case Based (MCQs) - Pair of Linear Equations in Two Variables

  • question_answer
    Find the area of each bedroom and kitchen in the Layout

    A) Area of each bedroom\[=\text{35 sq}.\text{ m}\] Area of kitchen \[=\text{3}0\text{ sq}.\text{ m}\]

    B) Area of each bedroom \[=\text{53 sq}.\text{ m}\] Area of kitchen \[=\text{3}0\text{ sq}.\text{ m}\]

    C) Area of each bedroom \[=\text{3}0\text{ sq}.\text{ m}\] Area of kitchen \[=\text{35 sq}.\text{ m}\]

    D) None of the above  

    Correct Answer: C

    Solution :

    Subtracting eq. (2) from eq. (1). we get   
                    
    Put the value of x in eq. (2), we get             
    \[6+y=13\,\,\,\,\,\,\Rightarrow \,\,\,\,\,y=7\]        
    \[\therefore \] Area of each bedroom
    \[=5x\,sq.\,m\,=5\times 6=30\,sq.\,m\]and area of the kitchen \[=5y\,sq.\,m\,=5\times 7=35\,sq.\,m\]
    So, option [c] is correct.


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