The length of a rectangular floor is more than its breadth by 200%. If Rs.529 is required to paint the floor at the rate of Rs.3/sq m, what would be the length of the floor? Options
A) 12
B) 18
C) 20
D) 22
E) 23
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 = 529/3 = 176.33 sq m   l b = 176.33 i.e., l * l/3 = 176.33   l^2 = 529 =&gt; l =23   23
<result>E</result>
The length of a rectangular floor is more than its breadth by 200%. If Rs.529 is required to paint the floor at the rate of Rs.3/sq m, what would be the length of the floor?