The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ Rs. 26.50 per metre is Rs. 8480, what is the length of the plot in metres?	Select:	A) 20	B) 200	C) 300	D) 90	E) 140
Let length of plot = L meters, then breadth = L - 20 meters   and perimeter = 2[L + L - 20] = [4L - 40] meters   [4L - 40] * 26.50 = 8480   [4L - 40] = 8480 / 26.50= 
<gadget id="calculator">8480 / 26.50</gadget>
<output>320</output>
320   4L= 360   L = 360/4= 
<gadget id="calculator">360/4</gadget>
<output>90</output>
90 meters. Answer: 90
<result>D</result>
The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ Rs. 26.50 per metre is Rs. 8480, what is the length of the plot in metres?