# Each employee of a certain task force is either a manager or a director. What percent of the employees on the task force are directors? GMAT Explanation

Each employee of a certain task force 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 than the average salary of all the employees on the task force.

(2) the average (arithmetic mean) salary of the directors on the task force is 15000 greater than the average salary of all the employees on the task force.

**Correct Answer:** C