- UID
- 573061
- 在线时间
- 小时
- 注册时间
- 2010-10-11
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
涛涛21-14(第21套第14题)求助! The charge for a single room at Hotel P is 25 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G. The charge for a single room at Hotel R is what percent greater than the charge for a single room at Hotel G ?
A. 15%B. 20% C. 40% D. 50% E. 150%
如何得出答案B? 设P=1, R=1.25, G=1.1. (R-G)/G=0.15/1.1 大家看错在哪里? |
|