The length of a rectangle is twice its breadth if its length is decreased by 5cm and breadth is increased by 5cm, the area of the rectangle is increased by 75 sq cm. Find the length of the rectangle.
let length = 2x and breadth = x then(2x-5) (x+5) = (2x * x)+755x-25 = 75 => x=20length of the rectangle = 40 cm
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