Each employee on a certain task force is either a manager or a director.What percentage of the employee on the task force are directors? (1)The average salary of the managers on the task force is $5,000 less than the average salary of all employee on the task force. (2)The average salary of the directors on the task force is $15,000 greater than the average salary of all employee on the task force. 答案是C,不明白..我觉得算不出来啊 On a certain sight-seeing tour,the ratio of the number of women to the number of children was 5 to 2.What was the number of men on the sight-seeing tour? (1)On the sight-seeing tour,the ratio of the number of children to the number of men was 5 to 11. (2)The number of women on the sight-seeing tour was less than 30. 答案C,(2)并没有给出WOMEN数啊..怎么得出MEN数的? |