← 百分比关系・求百分数 · 题库挑战

ONE QUESTION, ONE STEP

ZX-CD64DD35B5

2025年8月美国A卷 · 第 18 题

2025年8月美国A卷 · 原库模块 2 · Q18 原库参考解析

A researcher surveyed undergraduate students, graduate students, and postdoctoral students. The number of undergraduate students surveyed was 6,950% of the number of postdoctoral students surveyed and the number of graduate students surveyed was 32% of the number of undergraduate students surveyed. If there were 4,448 graduate students surveyed, what was the sum of the number of undergraduate students and postdoctoral students surveyed?

支持整数、小数和分数;循环小数建议填写分数,不需要写单位。