Not sure where Duke rates among top 25 teams, but Duke is currently
195th in the country in 3PA/FGA.
ETA: After poking around a bit, it appears that there are exactly twelve teams in the top 25 that are more reliant on the 3 than Duke (Kansas, Villanova, West Virginia, Kansas State, BYU, Temple, Wisconsin, Ole Miss, Ohio St., New Mexico, Baylor and UAB) and twelve that are less reliant (Texas, Kentucky, Purdue, Syracuse, Michigan St., Georgetown, Gonzaga, Tennessee, Pitt, UConn, Vanderbilt and Georgia Tech).