Teacher Wu awarded 35 pencils and 40 exercise books to several good students on average, but the difference between the exercise books was 2, and the pencils were just right. How many good students are there at most in this class?
吴老师把35支铅笔和40本练习本分别平均奖给几个三好学生，结果练习本差2本，铅笔正好．这个班级的三好学生最多有多少人？
<result>7</result>