Bunuel wrote:
The ratio of the length of a rectangular floor to its width is 3 : 2. If the length of the floor is 12 meters, what is the perimeter of the floor, in meters?
(A) 20
(B) 40
(C) 60
(D) 96
(E) 120
Simply use multiplier concept:
Length : Width = 3:2
If length = 12, the multiplier is 4. So width is 2*4 = 8
Perimeter = 2*(L + B) = 2*(12 + 8) = 40
Answer (B)
