A submarine descends 175 feet under water in 5 minutes. The rate of descent is constant. What is the rate of descent per minute?

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m