A Certain Board Game Requires a Two-Toned Wood Playing Surface $4$

question 212

Essay

A certain board game requires a two-toned wood playing surface. The central portion is made of a rectangular piece of pine, measuring $4$ in by $12$ in. The outer border is made of redwood, and has equal width on all sides. The area of the redwood border must be one third the area of the central pine portion. What must the width of the redwood border be?