1.Each emplye on 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 dollars less than the average salary of all employees on the task force.

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

Answer is C

2.At a dinner party, 5 people are to be seated around a circular table. Two seating arrangements are considered different only when the positions of the people are different relative to each other. What is the total number of different possible seating arrangements for the group?

Answer:  24