疑问179. one school only has undergraduate student, graduate student, and faculty member. If the ratio of undergraduate students per faculty member to the ratio of graduate students per faculty member is 1:20 (not accurate), what is the ratio of undergraduate students to graduate students? a) tells you the ratio of undergraduate students per faculty b) tells you the number of graduate students the school has horsefish:觉得从题目本身就可以推出了