2. 职称英语
  3. In a sample of patients at an animal hospital, 30 percent are cats and 60 percen

In a sample of patients at an animal hospital, 30 percent are cats and 60 percen

游客2024-01-14  35
问题 In a sample of patients at an animal hospital, 30 percent are cats and 60 percent are not dogs. What fraction of those patients who are not cats are dogs?
选项 A、 
B、 
C、 
D、 
E、 
答案 E
解析 For simplicity, assume that there are 100 animals. Of these 30 are cats and 70, therefore, are not cats. If 60 percent of the animals are not dogs, then 40 percent are dogs. If 40 of the noncat animals are dogs, then 4/7 of those patients who are not cats are dogs.
转载请注明原文地址:https://tihaiku.com/zcyy/3360323.html
相关试题推荐
随机试题
最新回复(0)