In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master's degrees, how many of the employees over 40 have master's degrees?
(1)Exactly 100 of the employees are college graduates.
(2)Of the employees 40 years old or less, 25 percent have master's degrees.