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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-6

  • question_answer
    The length and breadth of a square are increased by 30% and 20% respectively. The area of the rectangle so formed exceeds the area of the square by:

    A)  46%                            

    B)  66%    

    C)         42%                 

    D)         56%

    Correct Answer: D

    Solution :

    Let the side of square = 'x' Area of square \[={{x}^{2}}\] New length of rectangle \[=\frac{130}{100}x\] New Breadth of rectangle \[=\frac{120}{100}x\] Hence, Area of so formed rectangle                         \[=\frac{130}{100}\times \frac{120}{100}\times {{x}^{2}}\]                         \[=\frac{156}{100}{{x}^{2}}\] Therefore, area of rectangle exceeds the area of square by 56%


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