请问“at least 4.5 on a 7.0 scale"的成绩怎么算?原文是 a grade point average of at least 4.5 on a 7.0 scale请问这是哪一种算法啊?怎么算?

问题描述:

请问“at least 4.5 on a 7.0 scale"的成绩怎么算?
原文是 a grade point average of at least 4.5 on a 7.0 scale
请问这是哪一种算法啊?
怎么算?