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  3. 8th Class
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  5. Linear Equations in One Variable

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

  • question_answer
    Reema bought x pens at Rs 2.60 each and y greeting cards at 80 paise each. If the pens costs Rs. 12 more than the cards, the equation involving x and y is

    A)  \[13x-4y=6\]                

    B)  \[13x-4y=60\]

    C)  \[260x-8y=100\]           

    D)  \[260x-8y=12\]

    Correct Answer: B

    Solution :

    (b) : 'x' pens 'y' greeting cards Cost of all greetings card be 0.8y Cost of all pen = 2.6x \[\Rightarrow 2.6\times 0.8y+12\] \[\Rightarrow 26x-8y=120\] \[\Rightarrow 13x-4y=60.\]


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