Problem: the ratio between the perimeter and the width of a rectangle is 5 : 1 . if the area of the rectangle is 216 sq . cm , what is the width of the rectangle ?
Rationale: "2 l + 2 w = 5 w l = 3 w / 2 w * l = 216 3 w ^ 2 / 2 = 216 w ^ 2 = 144 w = 12 the answer is a ."
annotated_formula: divide(216, const_10)