The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 55 sq. cm. Find the length of the rectangle.
Answers.
A) 16cm	B) 18cm	C) 15cm	D) 20cm	E) 23cm
Explanation:   Let breadth = x. Then, length = 2x. Then,   (2x - 5) (x + 5) - 2x * x = 55 =&gt; 5x - 25 = 55 =&gt; x = 16.   Length of the rectangle = 16 cm.   16cmnswer: Option 16cm
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The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 55 sq. cm. Find the length of the rectangle.