Multiple Choice Questions on The length and breadth of a rectangle are in the ratio 3 2 If the length is increased by 5 m keeping........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The length and breadth of a rectangle are in the ratio 3 2 If the length is increased by 5 m keeping...........

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    The length and breadth of a rectangle are in the ratio 3 : 2. If the length is increased by 5 m keeping the breadth same, the new area of rectangle is 2600 m2. What is the breadth of the rectangle?

    30 m

    Incorrect Answer

    20 m

    Correct Answer

    32 m

    Incorrect Answer

    Cannot be determined

    Incorrect Answer
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    Explanation:

    3x, 2x
    So (3x+5)*2x = 2600
    6x2 + 10x = 2600
    3x2 + 5x – 1300 = 0
    3x2 – 60x + 65x – 1300 = 0
    3x(x-20) + 65(x-20) = 0
    Solve, x = 20
    So breadth = 20 m

    By: Amit Kumar
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