Banking Sample Paper IBPS PO (PT) Sample Test Paper-1

  • question_answer
    Direction: In the following questions two equations numbered I and II have been given. Solve both the equations and give answer.
    I. \[9x-8y=22\]        II. \[3x+9y=54\]

    A)  \[x<y\]

    B)  \[x>y\]

    C)  \[x=y\] or no relation can be established

    D)  \[x<y\]

    E)  \[x>y\]

    Correct Answer: E

    Solution :

     \[9x-8y=22~~~~...\text{ }(i)\] \[3x+9y=54~~~~...\text{ }(ii)\] Equation \[(i)\text{ }-\text{ }(ii)\text{ }\times \text{ }3\]             \[\begin{align}   & \underline{\begin{align}   & \,\,\,\,9x-8y=22 \\  & \_\,9x\pm 27y=162 \\ \end{align}} \\  & -35y=-140 \\ \end{align}\] \[\therefore y=\frac{140}{35}=4\] Putting the value of y in equation (i), we get \[x=6\] \[\text{Hence }x>y\]


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