Does anyone know the answer?
Each employee on a certain task is either a manager or a director.
What percent of the employees on the task force are directors?
1. The average (arithmetic mean) salary of the managers on the task
force is 5000 less then the average of all employees on the task force
2. The average (arithmetic mean) salary of the directors on the task
force is 15000 greater then the average of all employees on the task
force
1. Statement 1 is sufficient
2. Statement 2 is sufficient
3. Both statements are sufficient , but neither alone
4. Each statement is sufficient
5. Statements 1 and 2 are not sufficient
