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. 4240, what is the length of the plot in metres?	Select:
A) 20	B) 200	C) 50	D) 400	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 = 4240   [4L - 40] = 4240 / 26.50= 
<gadget id="calculator">4240 / 26.50</gadget>
<output>160</output>
160   4L= 200   L = 200/4= 
<gadget id="calculator">200/4</gadget>
<output>50</output>
50 meters. Answer: 50
<result>C</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. 4240, what is the length of the plot in metres?