Basic Theorems of Probability

A local country club has a membership of 600 and operates facilities that include an 18-hole championship golf course and 12 tennis courts. Before deciding whether to accept new members, the club president would like to know how many members regularly use each facility. A survey of the membership indicates that 68% regularly use the golf course, 49% regularly use the tennis courts, and 5 % use neither of these facilities regularly. Find the probability that a randomly selected member uses the golf or tennis facilities regularly.