A survey of magazine subscribers showed that 45.4% rented a car during the past 12 months for business reasons, 56% rented a car during the past 12 months for personal reasons, and 28% rented a car during the past 12 months for both business and personal reasons.

(a) What is the probability that a subscriber rented a car during the past 12 months for business or personal reasons
(b) What is the probability that s subscriber did not rent a car during the past 12 months for either business or personal reasons?