The length of a rectangular floor is more than its breadth by 200%. If Rs. 324 is required to paint the floor at the rate of Rs. 3 per sq m, then what would be the length of the floor? Choose the correct choice from the following choices.
A) 27 m  B) 24 m  C) 18 m  D) 21 m  E) None of these
Let the length and the breadth of the floor be l m and b m respectively.   l = b + 200% of b = l + 2b = 3b   Area of the floor = 324/3= 
<gadget id="calculator">324/3</gadget>
<output>108</output>
108 sq m   l b= 108 i.e., l * l/3 = 108   l2 = 324 =&gt; l = 18.   ANSWER:18 m
<result>C</result>
The length of a rectangular floor is more than its breadth by 200%. If Rs. 324 is required to paint the floor at the rate of Rs. 3 per sq m, then what would be the length of the floor?