In the title, "the latest math exam is three seventeenth higher than the last one" means that 85 points are three seventeenth higher than 85 points. There are two ways to solve this problem. You can get the score first, and then get the score this time. The formula is 85+(85 ÷ 17× 3). The second way of thinking is to ask 14% of the students who have not improved, and then ask for the score of this exam. The formula is 85× (1+1÷17×14).