8th Class Mathematics Algebraic Expressions Question Bank Algebraic Expressions and Identities

  • question_answer
    Ameesha and Prachi love gardening. They water their garden regularly. The length and breadth of Ameesha's kitchen garden are x m and y m respectively. The length of Prachi's kitchen garden is 5 m more than that of Ameesha's garden and the breadth of Prachi's garden is 3 m more than that of Ameesha's garden. Find the difference between the area of Ameesha's kitchen garden and Prachi's kitchen garden.

    A)  \[(5x+8y+10){{m}^{2}}\]

    B)  \[(3x+5y-15){{m}^{2}}\]

    C)  \[(3x+5y+15){{m}^{2}}\]

    D)  \[(xy+3y+5y+15){{m}^{2}}\]

    Correct Answer: C

    Solution :

    We have,         Length of Ameesha's kitchen garden\[=\text{ }x\text{ }m\] Breadth of Ameesha's kitchen garden\[=\text{ }y\text{ }m\] \[\therefore \]Area of Ameesha's kitchen garden\[=xy\text{ }{{m}^{2}}\] Length of Prachi's kitchen garden\[=(x+5)m\] Breadth of Prachi's kitchen garden\[(y+3)m\] \[\therefore \] Area of Prachi's kitchen garden \[=(x+5)(y+3)=(xy+3x+5y+15)\text{ }{{m}^{2}}\] Difference between area of Ameesha's kitchen garden and Prachi's kitchen garden \[=xy+3x+5y+15-xy=(3x+5y+15){{m}^{2}}\]


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