Home / Arithmetic Aptitude / Area :: Discussion

Discussion :: Area

  1. The sides of a rectangular field are in the ratio 3: 4 and its area is 7500 m2. What is the cost of fencing it at 25 paise per meter?

  2. A.
    Rs. 87.50
    B.
    Rs. 77.50
    C.
    Rs. 67.50
    D.
    Rs. 57.50

    View Answer

    Workspace

    Answer : Option A

    Explanation :

    Ratio between the sides of rectangle = 3: 4

       Let the ratio constant be x then,

       Length = 3x and breadth = 4x

       Area = L x B

                  7500=3x × 4x=12x2
                  = x2=625

                    x=25

    Length = 3 x 25 = 75 m, and Breadth = 4 x 25 = 100 m

    Perimeter = 2(75 + 100) = 2 x 175 = 350 m

    Cost of fencing 1 meter = 25 paise

    Cost of fencing 350 m = 350 x 25 = 8750 paise

    In rupees: Rs. 87.50


Be The First To Comment